in the groove - tss-static.comtss-static.com/.../customermagazines/groove_1_2008_general_en.pdf ·...

No. 1, 2008

Powerful and Robust

grooveThe world of seals and service

in theTrelleborg Sealing Solutions

Products

Meeting the challenge of fluid power applications

Alternative Energy

Winds ofchangeSealing solutions for the booming wind power industry

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Trelleborg Sealing Solutions in the groove No. 01/082

Products

Powerful and RobustTrelleborg Sealing Solutions has one of thebroadest ranges of products and materialsespecially for tough applications in the fluid power industry. Here we provide an overview of solutions for this market.

News

News

Automotive

Two solutions in OneSometimes providing a solution to a customer goes well beyond the product; this is the case with banded pistons for car shock absorbers. Trelleborg Sealing Solutions not only supplies the seal but also the machine to band the piston.

Alternative Energy

Winds of changeSealing solutions for the booming wind power industry

Interview

Inspector CarbonDealing with footprints rather than fingerprints, Keith Horgan, Account Manager at the CarbonTrust, acts as the policeman his appearance would suggest and is in charge of the weapons used forpolicing carbon footprints.

Innovation

Surface benefitsSpecifying the seal material with the right properties for an application is a vital factor in ensuring extended life. What’s on the surface though is equally important and by providing improved friction characteristics, coatings and treatments can enhance overall performance.

Development Partnership

Safeguarding our environmentProviding a sealing solution for hydraulic actuators, Trelleborg Sealing Solutions helps stop fluid leakage. This satisfied our customer, Flow-Tek, and also prevented a potential environmentalhazard.

At first people thought that the creation of electricity from windmills was a crazy concept, but unlike Don Quixote, the ideas man behind this vision was not just ‘tilting at windmills’. The wind power industry is now booming, and this renewable energy source is making a real contribution to our power needs worldwide.

Winds of change

contents

3Trelleborg Sealing Solutions in the groove No. 01/08

NBR material N7027 received approval from TZW Karlsruhe (KTW) for use in hot and cold water. This is one of a range of sealing materials and surface treatments from Trelleborg Sealing Solutions that complies with international potable water regulations. For further details contact your local marketing company.

In memoriam: Hank Traub, co-founder of W.S. ShambanHank Traub was 91 when he passed away on December 29, 2007. He, along with Bill Shamban, built W.S. Shamban and Co. from the trunk of Bill’s car with a shared confidence that Teflon®, a new product from DuPont, was a revolutionary business opportunity. In 1952, W.S. Shamban and Co. was born; setting into motion the extraordinary chain of events that would see the development of the heart of what is today the expansive range of proprietary products and materials offered by Trelleborg Sealing Solutions.

Contributing more than any other single individual to making W.S. Shamban and Co. the leader in seals technology and innovation, especially within the aerospace industry, Hank Traub was the holder of 17 patents. He invented our Turcon® material and filler systems and the spiral Turcon® back-up ring, which are now industry standards.

In 1997, the H.A. Traub Technical Center was dedicated in Fort Wayne, Indiana. The center, which houses the Trelleborg Sealing Solutions Americas headquarters, was so-named to honor Hank Traub and to recognize his years of outstanding and innovative contributions.

“He was truly a gentleman and a creative power in the early days of our company,” said Tim Callison, President, Marketing Americas.

500 bright ideas Trelleborg Sealing Solutions Americas Technology Council reached a huge milestone recently with the publication of its 500th white paper since its formation in 2002.

White papers are created for significant, worthwhile development opportunities identified for a product or process by sales engineers, application engineers, product engineers, product managers, market segment managers or anyone else within the US organization. These white papers are addressed with originators and other potential stakeholders through the seven-member Trelleborg Sealing Solutions Americas Tech Council to evaluate, compare and recommend to senior management the next major development projects for our development community in R&D, materials development and product engineering.

The Tech Council function provides a way to get the right people involved early to adequately and rapidly assess the opportunity in comparison with all others. It also provides a queue of available projects on which to work. This function helps steer our product portfolio and strategy to keep the right balance of innovation, risk, reward and investment, and get development opportunities quantified for senior management to further assess.

Cooperation with Save the ChildrenThe Trelleborg Group cooperates with Save the Children on an international basis. This work is part of the Group’s endeavor to take global social responsibility by contributing to the development and education of children.

“The agreement that we have signed jointly, and is a source of great satisfaction for us, gives us even better prerequisites in our work for children in need,” says Jonas Olsson of Save the Children Sweden. “By virtue of competence, money and commitment, Trelleborg will influence and improve the future of many children for a long time to come. This is also one of the few cooperative ventures with heavy industry. Accordingly, Trelleborg can serve as a good example to show the way for other companies.”

Fit for drinking

+++ news +++ news +++ news +++


Most wanted!Last year our O-Ring calculator software proved to be one of Engineeringtalk’s most requested items through their online engineering news website.

Why not check out Engineeringtalk? It’s a great online engineering resource for engineers. Go to:

Certified qualityTrelleborg Sealing Solutions in France has passed EN9120 certification specific to aerospace customers’ requirements at two locations – Maisons Lafitte, the marketing company’s head office and Condé sur Noireau, the logistics center.

What is EN9120?

Quality Management Systems have been used in the aerospace industry for many years. An effort by members of the aerospace industry to establish a single common Quality Management System has resulted in the BS EN9100 series. They are used and supported by the world’s leading aerospace companies and throughout their supply chain partnerships. EN9120 applies to stockists and distributors.

There was a great turnout at SEMICON Korea 2008 held from January 30 to February 1. Over 540 exhibitors participated in SEMICON Korea 2008, more than ever before. Many of our customers from all over the world visited the Trelleborg Sealing Solutions stand, where experts from the Asian and global team discussed applications related to the booming semiconductor industry.

Korean success

engineeringtalk.com

tss.trelleborg.com

To use our popular O-Ring calculator go to:

Fact

s: Korea is at the forefront of chip manufacturing as well being a global powerhouse for semiconductor memory technology. SEMICON Korea is one of the largest and most comprehensive industry event in Korea, hosting key players in the semiconductor, FPD, MEMS, display and microelectronics industries.

+++ news +++ news +++ news +++ news +++ news +++ news +++ news +++

�Trelleborg Sealing Solutions in the groove No. 01/08

Trelleborg Sealing Solutions has relocated seal manufacture from existing premises to a newly constructed building in Tewkesbury, Gloucestershire in England. This consolidates current production of high-technology components into a best-in-class facility.

With 141 employees, the manufacturing site is one of over 30 that Trelleborg Sealing Solutions has worldwide. It incorporates production of advanced perfluoroelastomer Isolast®, high-end FKM Resifluor™, along with fabrication of giant O-Rings and seals by the unique FlexiMold™ process, innovative rubber to metal technologies and leading-edge custom moldings. Within its 5,000 square meters/53,820 square feet, it also houses a newly equipped materials test laboratory and the UK research and development center.

To meet aerospace needs, an industry that accounts for a large proportion of Tewkesbury’s production, special packaging and handling of components is combined with strict quality control procedures. For clients in hygienic sectors or for those who demand super-clean components, such as semiconductor, there is a Class 100 cleanroom.

The construction and move into Trelleborg Sealing Solutions Tewkesbury took place progressively over the last year, with the new production site becoming fully occupied and functional from February 2008. And in keeping with Supply Chain Quality requirements, the complete relocation activity

has been shared with and scrutinized by many major external customers.

“We are pleased to continue our presence in the Gloucestershire area in a best-in-class facility with enough capacity to meet growing demand,” says Gordon Roper, European Managing Director Trelleborg Sealing Solutions, Global Operations Elastomers. “We feel that it is important to continue to support and service our European customers, especially those in high-tech industries such as aerospace and oil & gas, from local cost-efficient facilities.”

Best-in-class facility

Trelleborg Sealing Solutions In the groove, No. 1, 200899GBK9011EE0408© 2008 Trelleborg Group. All rights reserved® All trademarks are the property of Trelleborg AB.The turquoise color is a registered trademark of Trelleborg AB.

At time of publication the information contained in this literature is believed to be correct and accurate.

Editorial team: Donna Guinivan, Whitney Killip, Wendy Sack, Robert Zahiri

Responsible under German Press Law: Robert Zahiri

Graphic Arts: dialogart, Stuttgart, Germany

Printing: W. Kohlhammer, Stuttgart, Germany

QUAD-RING® Seal Trade Mark of Quadion Corporation

Awarding performanceTrelleborg Sealing Solutions China Guangzhou has been awarded ‘Annual Strategic Cooperating Supplier’ and ‘Excellent Supplier Award’ by two of its biggest customers, Guangdong Keda Industrial Co Ltd and Fujian Haiyuan Automatic Machinery Co Ltd.

“Responsibility, Innovation, Performance and Customer Focus are the core values of Trelleborg Group and guide our staff to meet the needs of each and every customer,” says Eric Chen, Regional Sales Manager of Trelleborg Sealing Solutions South China. “This explains how we have won these accolades.”

The Chinese facility is located close to many of its customers, which allows for excellent communications. Creating a platform for a ‘Win-Win’ partnership, the sales team and support staff work together to respond to inquiries and provide solutions for applications.



Las Vegas, Nevada was the setting for IFPE 2008, the International Exposition for Power Transmission. Taking place from March 11-15th, IFPE was co-located with CONEXPO-CON/AGG, the international show for the construction industry. Trelleborg Sealing Solutions was one of over 500 exhibiting companies from around the globe, a part of the largest IFPE show in history.

“IFPE afforded us several great opportunities to promote the Trelleborg Sealing Solutions brand. We had primary placement among many large companies which gave us opportunities to socialize with many large customers,” said Joe Jakubowski, Fluid Power Segment Manager for Trelleborg Sealing Solutions Americas. “The papers presented at the IFPE Technical Conference by our company were very beneficial and helped drive traffic to our booth. We had several key visits after these presentations.”

Stealing the show at IFPE 2008

Papers were presented at the IFPE Technical Conference by the following experts from Trelleborg Sealing Solutions:

• Dr. Nils Kohlhase Director R&D Europe

• Mark Sitko R&D Americas

• Dr. Bhag Gupta FEA Group Manager

• Rolf Poethig Technical Director

In an ideal location at one of the main gates of the South Hall, the Trelleborg Sealing Solutions Americas booth was the first thing that many attendees saw upon entering the show.


� to 8 MayHouston, USA

OTC 2008The Offshore Technology Conference is the premier global offshore industry event.

6 to 8 MayKarlsruhe, Germany

HygieniConLeading industry fair on the topic of hygienic design.

13 to 17 MaySão Paulo, Brazil

MECÂNICA 2008Exhibits encompass practically all the products for the machinery and equipment sectors.

27 to 30 MayMilan, Italy

Mechanical Power Transmission & Motion Control ExhibitionThe new and only tradeshow in Italy entirely dedicated to mechanical power transmission.

On show worldwideTrelleborg Sealing Solutions is exhibiting at lots of major venues globally, why not come and see us at one of these upcoming events.


Find out more information about these events under Service/Fairs at

tss.trelleborg.com


17 to 20 April Shanghai, China

Chinaplas 2008The 3rd most influential plastics exhibition in the world and Asia’s No. 1 plastics trade fair.

22 to 2� April Tokyo, Japan

IFPEX 2008The largest fluid power exhibition in Asia.

1 to � MayTaipei, Taiwan

MT duo 2008 - Taipei CNC Machine Tool & Manufacturing Technology ShowOne of Asia’s most important venues for showcasing advanced manufacturing technologies.

20 to 23 MayNitra, Slovakia

15th International Engineering Trade FairOne of the most significant engineering fairs in Slovakia.

21 to 22 MayAberdeen, Scotland

All-Energy ‘08The UK’s largest renewable energy exhibition and conference.

21 to 24 MayGuangzhou, China

Ceramics China 200822nd China International Ceramics Industry Exhibition.

27 May to 1 JuneBerlin, Germany

ILA Aerospace Exhibition and ConferenceThe world’s oldest air show with aircraft exhibited both on the ground and in the air.

8 Trelleborg Sealing Solutions in the groove No. 01/08

A car’s shock absorber includes a hydraulic piston, which moves within the absorber housing and damps the vibration from the road. The piston needs a seal to enable the shock absorber to perform. Traditionally a band of sealing material was wrapped around the piston.

“The usual method of creating the seal for the shock absorber was to cut a piece of PTFE based material and manually put this around the piston,” says Michael Andersen, General Manager of the Trelleborg Sealing Solutions manufacturing unit in Helsingør, Denmark. “More high-tech than that may sound, this is done with high precision and the PTFE band is specially formulated for the application to tight tolerances. The disadvantage is that this technique tends to be time consuming and it is difficult to achieve high volume throughput, which is something the carmakers demand.”

Engineers at the Helsingør facility, sort analternative to manual piston banding

Engineers at the Helsingør facility, which specializes in production of sealing solutions in the Trelleborg proprietary PTFE based material, Turcon®, sort an alternative. This was not an easy matter, but in the end the solution proved to be a process in which a flat disc of Turcon® is pulled over the piston. To do this a special assembly machine was engineered and developed by Trelleborg Sealing Solutions.

Piston banding machines successfully supply banded pistons to major shock absorber manufacturers

“The manufacturers of shock absorbers really liked this new concept, which gave a banding of consistent quality in high volumes,” continues Andersen. “The automated assembly machine technology was ours and I guess the first thought was that we should do the assembly of the bands onto the pistons at Helsingør. That though did not make sense from a manufacturing flow point of view. The most efficient point to do this was at the piston manufacturer, after they were sintered. So we proposed we specify and commission the assembly machines, then sell them to the piston manufacturer for use in their production line.”

A significant installed base of piston banding machines is successfully supplying banded pistons to major shock absorber manufacturers. Now a well accepted solution, the number of machines demanded has risen considerably.

“Last year we commissioned more assembly machines than ever before,” says Andersen. “As our customers expand their production globally, we are able to support them. At first, demand was just in Europe. Now it’s coming from the US, Russia and Asia, and we are currently in the process of providing assembly machines to China. Rather than ship discs all the way from Denmark to there, we are transferring the technology for disc production to our Shanghai facility. Local support to our customers is a key part of our customer philosophy and luckily, Trelleborg Sealing Solutions has the worldwide capabilities to make this happen.”

Sometimes providing a solution to a customer goes well beyond the product; this is the case with banded pistons for car shock absorbers. Trelleborg Sealing Solutions not only supplies the seal but also the machine to band the piston.

Two solutions

in One

Automotive


Traditionally the piston within a car’s shock absorber was sealed with a cut piece of PTFE based material, which was wrapped around the piston. This method was time consuming and it was difficult to achieve high volumes.

In the Trelleborg Sealing Solutions automated process a precisely machined thin disc of Turcon® is pulled over the piston in an assembly machine. It is engineered to incorporate a lip, providing enhanced friction characteristics. This improves the resistance to wear and overall performance of the shock absorber.

The advanced bronze-filled Turcon® material can operate in temperatures from -40°C/-40°F to above 120°C/248°F at peak pressures of 8 MPa/1160 psi with a linear movement of up to 3 m/sec/10 ft/sec. This provides long seal life, contributing to shock absorbers that can meet the demands from car manufacturers of one hundred thousand kilometers (sixty two thousand miles) before replacement.

For more information on Automotive Sealing Solutions and to download the brochure go to Service/Catalogs & Brochures at

tss.trelleborg.com

In short...

This year Trelleborg Sealing Solutions supplies the first banding machines to customers outside the EU.

Banding Machines are used in the production of shock absorbers for cars and trucks, where the circumference of the shock absorber’s piston is covered with a Turcon® band.

The Trelleborg Sealing Solutions method of banding pistons gives a banding of consistent quality in high volumes.

Simple product; Effective solution

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Winds ofAt first people thought that the creation of electricity from windmills was a crazy concept, but unlike Don Quixote, the ideas man behind this vision was not just ‘tilting at windmills’. The wind power industry is now booming, and this renewable energy source is making a real contribution to our power needs worldwide.

In short...

An interview with AVN Hydrauliks in Silkeborg, Denmark containing Information on

wind power as renewable energy for the future

requirements for the operation of wind turbines

capabilities of AVN, including extensive testing

facts and figures about wind turbines

Alternative Energy

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Donna Guinivan reports from AVN Hydrauliks, manufacturer of components for wind turbines

Dotted all over the green and rolling landscape of Denmark, where the idea for wind power originated, are wind turbines. This renewable energy source now accounts for 20 percent of the country’s electricity needs, more than anywhere else in the world.

After traveling two and half hours from Copenhagen, I arrived at AVN Hydrauliks in Silkeborg, where I was met by the Export Sales Manager, Poul Kristensen. He proudly showed me around his company’s production site, which has more than doubled in size in the last year.

AVN Hydraliks has supplied actuatorssince wind power began

“We’ve been involved in wind power since it began back in the 1980s,” says Poul. “At first the turbine producers came to us and told us what they wanted, but over time we gained a high level of expertise which allows us to recommend the optimum hydraulic system for their application.”

In the last few years wind turbine technology has changed. Previously the wind turbines were stall machines and their position would shift only once every ten minutes. Such turbines have been superceded by continuous pitch

change


systems, where the pitch, the position of the nacelle and angles of the blades, constantly changes in small amounts once every rotation. That could be on average 15 times per minute.

Continuous pitch turbines operate24-7, and reliability is the number one requirement

“While this optimized the production of energy from the turbine, for us, the actuator manufacturer, it presented a real challenge,” continues Poul. “Instead of hydraulics producing six long strokes per hour, they now had to give nine hundred short strokes in the same period. And it’s not just the pitch which is continuous, it is also the turbine’s operation, with the actuators needing to initiate those strokes 24 hours a day, seven days a week.

“Customers have high expectations from our products, and the number one requirement of the wind turbine manufacturers is reliability. At first this was not the case. Initially demand for windmills was on a small scale, from farmers with a single turbine powering an individual generator. Then the power distributors became involved. They built relatively small wind farms and quality needs increased. Nowadays wind power is government backed and expansion is on a huge scale; the power suppliers are making the decisions and the demands. These big investors are not prepared to finance installations unless equipment can be guaranteed for 20 years with only the minimum of maintenance.”

Turbine maintenance needs to belimited as it is difficult and costly

“Maintenance of turbines is difficult and costly,” says Poul. “On land it is hard enough, but offshore it is really tough. And when the windmill is switched off for maintenance, it is not producing energy and losing income. On top of that, operators are often penalized if supply targets are not met. So a primary objective for them is to minimize routine downtime, while stoppages due to component failure have to be avoided at all costs.”

AVN put a great deal of emphasis on research and development with over 20 percent of the 70 people employed at the Silkeborg site involved in R&D. “Here in R&D it’s not just about knowing the product, it’s about thinking about new solutions to the challenges imposed by turbine design and about finding new ways of doing things,” says Johnny Fruekilde from AVN’s Research and Development department.

Equipment for turbines needs to beguaranteed for 20 years

“Meeting the target life of 20 years for an actuator required all our expertise, and initially it seemed almost unfeasible. If you imagine the actuator as a car, it’s a bit like saying to its manufacturer that you won’t buy his vehicle unless it can travel 500,000 kilometers without replacing the oil filter, brake pads or any other wearing parts. Yet we have strived to accomplish the impossible, and our actuators should provide the 20-year life span stipulated with very little maintenance.

Alternative Energy

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Product examples

The V-seal is used in a variety of locations.

Pitch cylinders adjust the turbine’s rotor blades in the wind. These are produced by Trelleborg’s customers and use seals that are supplied by Trelleborg Sealing Solutions.

Radial oil seal is typically used on the shaft of the yaw gear.

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“At the moment though, we are working a little in the dark when it comes to actual performance in application. The continuous pitch systems have only been around for three years so we are basing our expectations on extrapolating performance results from older generation wind turbines. This is combined with virtual modeling and long-term testing on individual elements of the system.”

Virtual and physical testing is used foractuator proving and specification

Simulation programs are extensively used by AVN to specify the best hydraulic and actuation system for each design of

wind turbine. Following on from this though, automated physical testing is a necessity. The conditions within the wind turbines are very specific to the application. This means that AVN needs to build test rigs to their own designs that can as closely as possible replicate the situation within the nacelle and hub.

“We know that the hydraulic system can only ever be as strong as its weakest link, and early on we realized that the reliability of the sealing configuration was highly dependent upon the quality of its counterparts,” continues Johnny. “So one area we have focused on is the interaction between the surface finish of the rods and shafts of the actuators and the sealing components. A special rig was constructed specifically to test this and operates 24-7.”

AVN Hydrauliks are a leading supplier of actuators for wind turbines.

Alternative Energy

1�Trelleborg Sealing Solutions in the groove No. 01/08

The dynamic demands on seals for the hydraulics are extreme

The seals within the hydraulics are integral to its performance, and optimizing their life is critical to the long-term effectiveness of the total system. Several other specially built rigs are used to measure sealing characteristics, as the dynamic demands of the application are extreme.

“The requirements for sealing of the actuator for wind turbine applications were unique,” says Per Hvidberg, Sales Engineer from Trelleborg Sealing Solutions, Denmark. “Never before had I been faced with a demand for a sealing configuration on a cylinder that produced relatively rapid short strokes continuously. And not only was there linear pressure from the rear, there could be side load too.”

Per’s relationship with the engineering team at AVN goes back a long way and when asked to support them in development of continuous pitch actuators, he, the engineering team at Trelleborg Sealing Solutions Helsingør and AVN worked together to come up with the best possible design.

The wind power actuator and its sealing system must be capable of operating at 250 bars/3625 psi with constant pressure on the rod from behind and differential side loads that control positioning. Seals must give minimal wear and facilitate dynamic movement that is continuous in short strokes, on average 900 times per hour.

Temperature resistance is needed down to -30°C/-22°F as standard and to -40°C/-40°F in the Artic. Below these temperatures the oil within the cylinder cannot function and requires warming with heating elements. Maximum temperature is 60°C/140°F. Beyond this the system is cooled, otherwise the oil becomes stressed, its viscosity is too low, and it carbonizes.

In addition, the actuators must withstand high humidity, salt spray and the rigors of wind and rain. Corrosion is prevented with advanced coating technology.

Challenging requirementsFact

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Hydraulic systems in actuators contain a complex seal configuration

“Within the actuators is a complex arrangement of seals ranging from O-Rings to specialist Turcon® PTFE based geometries and Slydring® in Orkot®,” says Per. “The unique configuration is specially engineered to enhance lubrication, optimize friction characteristics, and maximize service life, while preventing any external leakage. Some of the seals are expected to achieve the twenty year target, but it is impossible to guarantee this.”

“As this was the case,” says Johnny, “the hydraulics were designed for easy exchange of the seal set. This is mounted in a module that can be quickly bolted on and off. The minimum life expectancy of the sealing configuration, allowing for the seal that has the shortest predicted life, is seven years, but replacement is recommended after five. Other than this, and routine rod replacement, the actuators should run without maintenance except for the systematic checking that the operators do for any leakage or loss of pressure. We feel that this arrangement gives the ideal compromise between minimum required maintenance and guaranteed long-term performance. ”

AVN assembles product within acleanroom to maximize system life

“Cleanliness of subcomponents is another important factor,” comments Poul. “Before assembly the system is flushed through to ensure there is no metal from machining or other debris such as dust or sand within the cylinder. Any residual matter such as this has been found to cause wear on the seals, shortening seal life and consequently total system life.

“The expanded factory has allowed us to construct a cleanroom. It’s not quite like the cleanrooms used in semiconductor or chemical processing, but it’s advanced in our type of manufacture. The cleanroom will be completely enclosed with barriers between it and the outside world and an extraction system to eliminate media that could potentially enter the actuator’s hydraulic system before it is enclosed.“

Global growth is the key to the futurefor AVN

And what does the future hold for AVN?

“Growth and more growth,” says Poul. “We see the Silkeborg site expanding even further, but we are also supporting the turbine manufacturers as they enter booming wind power markets globally. We already have production facilities in India and are planning expansion in China and the US.”

It’s hard to imagine when you look at a wind turbine that the nacelle, or the structure that houses all the turbine’s generating components for the blades, is large enough for a man to stand up in. It has to be, because for maintenance the engineer has to enter this either through the

side, but more commonly by climbing to the top of the tower, and down into the nacelle from there. That’s not easy 100 meters/330 feet high on land and even more daring when the turbines are up to 100 kilometers/60 miles out at sea.

Maintenance – a daring occupation

Alternative EnergyFa

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Green dreams result in 95% renewable energy

A 24-hour mains electricity supply finally arrived in February 2008 for residents of the Isle of Eigg, which lies in the Small Isles archipelago off Scotland’s west coast. So remote, it previously had to rely on expensive diesel generators to run homes. Now operational, a £1.6 million renewable energy system, which includes hydro, wind and solar power, is expected to generate more than 95 percent of its annual energy demand.

It has taken a decade for the islanders’ green dream to be realized. The idea was first raised after the community of less than 100 people bought the island from its previous owner in 1997. Now, a total of 45 households, 20 businesses and six community buildings are linked together by six miles of buried cable that form a high voltage network. This proves the future really can be renewable.

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Wind turbines: Facts and figures

The wind turbine tower is between 35 and 120 meters/115 to 395 feet high with blades of 12 to 60 meters/40 to 195 feet in length. These are attached to a nacelle which is over two meters/7 feet high and that can rotate 360 degrees on top of the tower. Each of the three curved blades of the turbine is positioned by an independently operated actuator with a stroke of 1.2 to 1.5 meters/4 to 5 feet and can be tilted through 90 degrees.

Turbines are becoming larger and producinghigher megawatts

The higher the turbine and larger the blade size, the greater the megawatts of electricity produced each hour. The smallest turbines are producing one megawatt per hour while the largest yield up to five megawatts. In Europe most turbines are between 1.5 and 2.6 megawatts. The biggest used on land is 3.6 megawatts, with a number installed offshore between 4.5 and 5 megawatts. In Asia the trend has been for larger wind farms with smaller wattage turbines.

Bigger turbines are not always better; it depends on the size of the wind farm, the stability of the electricity grid it supplies and the promised output. So in some cases it is beneficial to have the option of shutting off a lower production source than a higher one, even though there are economies of scale in running a high output turbine compared to a smaller one.

In today’s turbine designs production ofenergy is optimized

On top of a turbine tower are two wind sensors checking wind direction and speed. One is the primary input and the second for backup. On installation the nacelle of the turbine is positioned inline with the predominant wind direction. Based

on complex arithmetic calculations the wind turbine’s control system take the sensors input, and automatically yaws, or turns the nacelle to the wind, the actuators tilting each blade independently. Positioning is precise, to exacting tolerances, thereby optimizing energy production in the wind condition. The movement is calculated for every rotation, which may be 15 times per minute, continuously for 24 hours, seven days per week.

When choosing a site for a wind farm, analysis must prove it to have 2,500 hours of wind at 12 meters/39 feet per second over a year to make them viable to the utility companies. Wind turbines will normally operate from three meters/10 feet per second to 25 meters/80 feet per second, with the optimum wind speed being between 12 to 15 meters/40 to 50 feet per second. Though designed to withstand speeds up to 50 meters/165 feet per second, the control system will counter over rotation for speeds of over 25 meters/80 feet per second due to safety concerns.

Maximum utilization is targeted for windfarms

The utility companies target 98 percent utilization with two percent allowance for maintenance. The turbines can be switched on and off remotely from control rooms anywhere in the world. This is done for maintenance or in response to grid changes.

On the stall turbines a braking mechanism is employed to stop the windmill. On the new larger turbines this can stress the tower, so tilting a single blade to 90 degrees normally stops them. In an emergency situation this method plus a brake will be employed. In these circumstances the windmills are stationary in well under a minute. The brake, in all cases, then holds the blades in position.

Alternative Energy


Top ten installed wind power capacities (MW) in 2006Rank Nation 200� 2006 2007

1 Germany 18,415 20,622 22,247

2 United States 9,149 11,603 16,818

3 Spain 10,028 11,615 15,145

4 India 4,430 6,270 ~ 8,000

� China 1,260 2,604 ~ 6,000

6 Denmark (& Feroe Islands) 3,136 3,140

7 Italy 1,718 2,123 2,726

8 United Kingdom 1,332 1,963 2,388

9 Portugal 1,022 1,716 2,065

10 Canada ,683 1,459 1,770

World total (MW) �9,091 74,223 ~ 94,000

Check out

The Global Wind Energy Council: www.gwec.net

The European Wind Energy Association: www.ewea.org

The American Wind Energy Association: www.awea.org

Want to find out more about wind power?

For more information on AVN products go to

avnhydraulik.com


The Carbon Trust is an organization with a mission. Its aim is to assist companies and other organizations to explore and exploit the potential for cost-efficient carbon reduction, mainly through energy savings, but also by developing and using low-carbon technologies.

CarbonInspectorDealing with footprints rather than fingerprints, Keith Horgan, Account Manager at the Carbon Trust, acts as the policeman his appearance would suggest and is in charge of the weapons used for policing carbon footprints.

Towering over six feet tall and built like the archetypical British Bobby, it comes as no surprise that Keith Horgan has three grown-up children in the police force.

“Police and voluntary work is a family tradition, and after 30 years in industry, I was ready for a career change. I simply felt it was time to step up to the mark and join the rest of the family, doing something socially responsible,” he says.

He found the perfect job 18 months ago, joining the Carbon Trust where, as an Account Manager, he helps industry self-police their carbon footprint. Drawing from his broad experience gleaned from industry, he feels he is able to do something worthwhile.

Over the years, I have worked within several different industries. Therefore, I feel comfortable working with all kinds of enterprises, helping them to identify ways of reducing their energy consumption and cutting carbon emissions.”

Interview


Carbon


“Police and voluntary work is a family tradition.”

How did Trelleborg get involved?

“Trelleborg was one of a handful of clients that were assigned to me when I first started working for the Carbon Trust. Together, we have been setting up a pilot scheme in the UK and studying opportunities for carbon reduction at the company’s sites here. This will subsequently form the basis for a system that can be rolled out worldwide,” Horgan explains.

An independent company set up in 2001 by the British government, the Carbon Trust focuses on reducing CO2 emission in the UK. However, since many of its clients are global companies, the organization has a very international approach.

“Solutions are tailored according to the size of a company’s energy use. But they also need to be appropriate for the company and therefore depend on how advanced the company is with regard to energy efficiency, technology and so forth,” says Horgan.

In a pre-study involving four Trelleborg sites in the UK, a number of energy-saving opportunities were identified during spring 2007. In total, these could lead to the

energy bill being reduced by 15 to 20 percent per year. To realize these annual savings, an initial investment from the company’s side is required. However, with a payback time of less than a year, this would be money well spent.

How can awareness about a low-carboneconomy be raised?

“Often, there is awareness within the company that energy efficiency investment will result in cost savings. However, the mechanisms for working across the company or organization to achieve this might not be in place,” Horgan says.

By providing access to the right range of tools and guidance to achieve energy efficiency, which can be applied throughout the entire organization, Keith Horgan is the catalyst that makes change possible.

“The real challenge facing us all is how to bring about change on a global scale. That will be tough,” he says, disposing of his coffee cup in an elaborate recycling bin.

Interview


The Carbon Trust’s mission is to accelerate the move to a low-carbon economy. It works with private and public sector organizations to reduce carbon emissions and develop commercially viable low-carbon technologies. For large organizations, such as Trelleborg, who wish to manage and reduce their carbon emissions while growing profitably, it runs a program called Carbon Management. This service, co-funded by the Carbon Trust and the participating company, is a five-step process typically running for six to nine months that provides a strategic view of how carbon impacts the organization by identifying the risks and opportunities associated with climate change. The Carbon Management Program is designed for organizations with a UK energy bill exceeding £3 M per year.

Carbon Trust is making a difference in the UK

To date, the Carbon Trust has worked with one third of the companies listed on the UK stock exchange, thousands of smaller and medium-sized businesses and 98 Local Authorities in the UK. Furthermore, since it was established in 2001, the company has helped UK organizations achieve a total saving of 10.8 million tons CO2.

During 2006-07, the Carbon Trust also offered 482 interest-free Energy-Efficiency loans worth over £18 M to small and medium-sized enterprises. Its expert consultants also provide free advice to companies wishing to measure their carbon footprint and to identify ways to reduce it. Having gathered expertise in low-carbon technology and renewable energy, it also sponsors research in these areas.

Personal:Profession: Account Manager, the Carbon Trust

Education: Grammar School, City & Guilds

Nationality: British

Family: Four grown-up children

Most recent book: John Peel: A life in Music, by Michael Heatley

Most recent film: Film enthusiast, have seen all the latest action and science fiction films

Leisure: Golf, club secretary

Tailored support for Carbon Management

“Often, there is awareness within the company that energy efficiency investment will result in cost savings.”

“I simply felt it was time to step up to the mark and join the rest of the family, doing something socially responsible.”

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Specifying the seal material with the right properties for an application is a vital factor in ensuring extended life. What’s on the surface, though, is equally important, and by providing improved friction characteristics, coatings and treatments can enhance overall performance.

Surface benefits

Innovation

A wide range of coating and surface treatments are available from Trelleborg Sealing Solutions


Your Benefits from Coatings

save time and increase safety and security in assembly

dry coatings need no additional lubricants

cleaner process reduces associated time and cost for maintenance

ensures shorter process-flow times

extends service life

“Our expertise in coating technology is a real benefit to our customers,” says Simone Frick, Product Engineer O-Rings.

The fact that Simone is dedicated to the development and proving of new seal coatings and treatments indicates the importance that Trelleborg Sealing Solutions places on these.

“We do not manufacture the coatings ourselves,” continues Simone. “We leave that to companies who specialize in the processes. What we do is work with manufacturers in their development of surface treatments and coatings, ensuring they meet the specific demands of our customers. Once developed we then put the coatings or treatments though rigorous testing in our own laboratories.”

One of the main characteristics enhanced by coating or treating the seal is friction. This is an area of focus, and a variety of treatments are offered to meet different criteria.

“Due to the molecular structure of elastomers they tend to stick to their mating surfaces. This means that their inherent friction characteristics are poor. By applying a coating or treating the surface of a seal, these can be much improved,” says Simone. “This means O-Rings, which are recommended primarily for static applications, can be used in slow moving dynamic situations. In automated assembly it prevents O-Rings sticking together. It can also significantly lower insertion forces in one-off or on/off assembly of sub-assemblies.

“Some of the coatings we offer can satisfy quite specialist needs. For instance, a number contain UV indicators. This is excellent for identification of transparent coatings. Another example is FDA compliant Flexcoat™ FF coating, developed for the food and pharmaceutical industry. And for quality control on fast moving automated lines, we are currently working on colored coatings to identify when seals are missing from components.”

Check out our brochure on coatings under Service/Catalogs & Brochures at

tss.trelleborg.com

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Within the fluid power industry seals and bearings must perform in a wide variety of applications, from light-duty to heavy-duty. Whether they are high performance O-Rings or complex proprietary geometries, seals have a decisive influence on the design, function and service life of hydraulic and pneumatic systems. To meet the requirements of generation, control and transmission of pressurized fluids, Trelleborg Sealing Solutions offers a complete package of sealing and bearing solutions specifically engineered for this industry.

Products


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Trelleborg Sealing Solutions has one of the broadest ranges of products and materials especially for tough applications in the fluid power industry. Here we provide an overview of solutions for this market.

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Turcon® Stepseal® 2K can be used as a single seal element or in tandem, for reciprocating hydraulic rod and piston systems. Incorporating a high-lift rear chamfer, it achieves an advanced hydrodynamic back-pumping effect. This provides very good leakage control, while the design of the O-Ring relief chamber reduces the load on the counter surface, increasing overall extrusion resistance. Resulting reduced friction provides lower energy consumption and an extended service life. Within designs it can also cope with increased radial clearances, leading to cost reductions in hardware engineering.

Trelleborg Sealing Solutions offers a wide choice of O-Rings that balance cost-effectiveness with performance. Any size of O-Ring is available (standard or custom), in materials capable of withstanding media commonly used in hydraulic systems and of operating over a broad range of temperatures. Predominantly used in static applications they can also be suitable in some slow moving dynamic situations.

Simple, closed groove design reduces hardware and design costs

Compact design allows for smaller hardware

Easy, foolproof installation reduces risk

Applicable to a wide range of sealing situations: static, dynamic, single or double-acting

Broad compound choice for compatibility with most media used in hydraulic and pneumatic systems

O-Rings in high specification compounds

Turcon® Stepseal® 2K with advanced hydrodynamic back-pumping

Versatile multi-functional sealing elements Hydraulic cylinder rod seal

Meeting the sealing requirements of the fluid sealing market

Products

Turc

on® S

teps

eal®

2K

O-R

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Turcon® Stepseal® V is specially engineered to prevent pressure build-up even in the most difficult of sealing configurations. It incorporates a number of unique features. These include a patented hydrostatic pressure relief system, which provides rapid pressure actuation and pressure balancing under all service conditions. A machined valve groove ensures precise opening and closing of the relief channel, providing robust performance of the relief function independent of hardware deflection.

The inherent excellent friction characteristics, wear and abrasion resistance of Turcon® is enhanced with Stepseal® V’s contoured rear chamfer for hydrodynamic back-pumping. It is suitable in both static and especially dynamic situations and is easy to install. Its stabilizing edge prevents seal deformation and increases assembly robustness by protecting the seal face during rod insertion. In addition, the design and function of the seal mean no buffer volume is required, saving both cost and space.

Hydraulic cylinder rod seal primariliy in high velocity situations

Turcon® Stepseal® V prevents pressure build-up

Features and benefits of Turcon® Stepseal® 2K and Turcon® Stepseal® V

High static and dynamic sealing effect

Very good extrusion resistance, to suit wide hardware clearances

Low friction, increasing performance and working life

Stick-slip free starting, no sticking even after shut down

Excellent abrasion resistance, maximum operational reliability

High resistance to chemicals

Available for rod diameters up to 2600 mm/102 inches

Available for bore diameters up to 2700 mm/106 inches

Operational at pressures up to 80 MPa/800 bar/11600 psi

Operational at speeds up to 15 m/s/49 ft/sec with reciprocating movements, frequency up to 5 Hz

Operating temperatures of -45°C to 200°C/-49°F to 392°F

Suited to mineral oil-based hydraulic fluids, flame retardant hydraulic fluids, environmentally safe hydraulic, fluids (bio-oils), water and other media

Did you know? Just like the squid, our seals keep in shape under pressure.

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Due to the special design behind the dynamic seal lip, the Zurcon® U-Cup RU9, with its structure of slide segments interspersed by back-pumping channels, features excellent back-pumping ability across the entire pressure range. The dynamic seal slide segments also have a microstructure with excellent tribological and sealing characteristics. As well as increasing the sealing ability of the Zurcon® U-Cup RU9, this also ensures a constant lubrication film underneath the seal sliding surface, reducing dynamic friction and breakaway force, even after prolonged periods of rest.

Long service life minimizes maintenance and downtime

Unique patented construction gives excellent back-pumping ability

Constant lubrication film minimizes break-away force even after extended periods of rest

Proven performance under high pressure for extended periods

Superb friction characteristics with low heat generation

Superior extrusion resistance

Wide operating temperature range

Compact installation dimensions

The Zurcon® Wynseal is a cost-effective double-acting piston seal made up of a specially engineered polyurethane sealing element and an O-Ring which acts as an energizing element. The seal’s distinct feature is the special design of the seal edge profile. Two external edges of the seal act as the primary seal and absorb pressure from either side. Radial notches are molded into the sidewall to negate the hazards of the blow-by effect. The central back-up and sealing bulge enhance sealing and guarantee optimum pressure loading of the seal under any operating condition.

High static and dynamic sealing effect

Excellent abrasion resistance

Simple groove design making a one-piece piston possible

Suitable for grooves to ISO 7425, Part1

Zurcon® Wynseal negates the hazards of blow-by

Zurcon® U-Cup RU9 gives superior performance


Hydraulic cylinder rod seal Hydraulic cylinder piston seal

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Zurcon® Scraper DA 24 prevents ingress of external media

The Zurcon® Scraper DA 24 is a double-acting scraper made of polyurethane. It is ideal for severe operating conditions and situations where there is a high level of external media present. The special design of the inward-facing sealing lip contributes to an optimum contact pressure resulting in a very high scraping effect of the residual oil film.

The outward-facing scraper lip leans against the housing. This ensures an optimum sealing force and prevents the penetration of external media and water across the groove bottom. Also, when in very dirty environments or if the piston rod has side load, the scraper remains stable.

Very good scraping effect of the outward and inward lip

Reliable with a side load to the piston rod

Sturdy and wear-resistant

Simple installation

Hydraulic cylinder double-acting scraper

Did you know? Our materials operate in temperatures at high levels, just like the giraffe.

View our entire product range under Products at

tss.trelleborg.com

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24


Products

Slydring® absorbs the side load forces which occur in the piston and rod of a hydraulic cylinder while eliminating metallic contact between the sliding parts of the cylinder, e.g. piston and cylinder bore or rod and rod gland. As Slydring® is non-metallic it offers major benefits compared with the traditional metallic guides.

Slydring® has a rectangular cross-section with rounded or chamfered edges, preventing edge forces in the corner radii of the grooves. The chamfers also serve to facilitate installation.

High load bearing capacity

Eliminates concentration of stress in contact areas

Wear-resistant

Long service life

Good friction behavior

Damps mechanical vibrations

Effective wiping effect

Eliminates hydrodynamic pressure build-up in the guide system

Simple closed groove, easy installation

Sly

drin

g®

Bearing for hydraulic cylinders or other equipment


Slydring®

eliminates metallic contact

Did you know?Our seals have excellent load bearing capabilities, just like an elephant.

What is back-pumping?

Many of the proprietary seals engineered by Trelleborg Sealing Solutions for hydraulic applications incorporate unique back-pumping technology. In this, on the forward stroke of the shaft, an oil lubricating film is distributed under the seal. On the return stroke, the oil is back-pumped into the system, preventing leakage, reducing dynamic friction and breakaway force, even after extended periods of rest.


HP-20™ Radial Lip Seal for high speed and pressure applications

Zurcon® Roto Glyd Ring® S for applications with oscillating movements

The Zurcon® Roto Glyd Ring® S is used for sealing shafts, axles, bores, rotary transmission leadthroughs, journals and swivels with rotary or oscillating movement. The seal is double-acting and can be exposed to pressure from one or both sides. It consists of a sealing element of Zurcon® and is activated by an O-Ring. The contact surface profile of the sealing element is specially designed for use under high pressures and at low sliding speeds.

Excellent wear and extrusion resistance

Superior friction characteristics

Exceptional sealing performance

Long service life

High pressure up to 40 MPa/5800 psi

Temperature range from -30 to +100°C/-22 to +212°F

Standard groove design ISO-DIN 7425/1

Easy installation

Shaft and Bore diameters from 10 mm to 2700 mm/0.4 inch to 106 inches

The HP-20™ Radial Lip Seal is our patented high torque hydraulic motor shaft seal. The pressure balancing design incorporates a metal retainer and sealing lip which is pressure activated. It is suitable for high pressure, low velocity situations.

The patented lip features of the HP-20™ seal are the anti-extrusion fit, the pressure balancing design and the heat dissipating retainer. The metal case, or retainer, of the seal and the resilient body shape covering the retainer are responsible for the achievement of the pressure balancing design. At the same time, the reduced clearance of the metal case retainer prevents seal extrusion. A special HNBR compound aids in attaining its capability and long life.

Excellent pressure balancing

Works within precisely defined pressure and velocity combinations

Extrusion-resistant

Dissipates heat

High pressure, low velocity hydraulic motors and pumps

HP-2

0TM

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con®

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Hydraulic rotary actuators and swivels


Zurcon® Z20, Z22 and Z201

Trelleborg Sealing Solutions seals produced in our Zurcon® polyurethane materials have outstanding extrusion and wear resistance. No additional back-up rings are necessary up to 40Mpa/5800 psi if our installation recommendations are used.

Zurcon® Z20 and Z22 were developed for use in mineral oil-based hydraulic fluids. They can also be used in synthetic ester fluids within our recommended temperature range.

Zurcon® Z22 and Zurcon® Z20 materials have been tailor made to have very low compression set values to meet applications under low or high temperature conditions as well as the paint drying process of hydraulic components with water-based varnish paint coats.

Zurcon® Z20standard material for hydraulic applications

Zurcon® Z22premium material for hydraulic seals applications with a wide operating temperature range

Zurcon® Z201standard material for hydraulic scrapers

A selection of fluid power materialsZurcon® and Turcon® are proprietary materials developed by Trelleborg Sealing Solutions. Zurcon® is polyurethane while Turcon® is PTFE based. Turcon® materials have excellent friction characteristics and are compatible with virtually all chemicals and media. Zurcon® compounds give superior abrasion and wear resistance. HiMod® materials are engineered thermoplastics for optimized sealing and bearing performance.

High performance polyurethane, PTFE based and thermoplastic materials

Products


Turcon® T46

Advanced bronze-filled PTFE material

High compressive strength

Good sliding and wear properties

Good extrusion resistance

BAM tested

* Hydro-Components Research and Development Corporation (HCRD), that originally developed these materials, was acquired by Trelleborg Sealing Solutions in May 2007.

Zurcon® Z80

UHMW-PE (ultra-high molecular weight polyethylene) material that is preferred for use in hydraulics and pneumatics due to its excellent friction and wear resistance

Good lubrication and wear performance

Self-lubricating

Low friction value

No water absorption

Excellent resistance to chemicals

High wear resistance

HiMod® HM061

Polyacetal (POM)-based, glass fiber-reinforced material

High compressive strength

Easy installation on pistons and glands (gland bore < 38 mm/1.5 inches)


Water absorption 0.2%

High stiffness

HiMod® HM803

Heat-stabilized polyamide material with special glass fibers for improved bearing characteristics and proven performance

High compressive strength even at high temperatures


Easy installation on pistons and glands (use 0.06 wall for bores under 1.50 inches)

Low friction

Proven proprietary Hydro-Components material*

HiMod® HM852

Heat-stabilized polyamide material with special glass fibers plus PTFE lubricant for applications with marginal lubricity

Excellent price/performance ratio

High compressive strength even at high temperatures


Easy installation on pistons and glands (use 0.06 wall for bores under 1.50 inches)

Low friction

For operation under poor lubrication

Proven proprietary Hydro-Components material*


Safeguardingour environment



A sealing solution for hydraulic actuators helps stop fluid leakage. This satisfied our customer, Flow-Tek, and also prevented a potential environmental hazard.

Flow-Tek, a subsidiary of Bray International, is a Houston-based company that manufactures a variety of ball valves and actuators. One such actuator, the Double-Acting, Spring-Return Automator, was originally designed for pneumatic use. Flow-Tek found, however, that some of its customers were using these actuators in hydraulic applications.

“When air is being used, as it is in pneumatic actuation, leaks are not a concern as long as the part functions as intended,” says Steven Farnsworth, Sales Engineer for Trelleborg Sealing Solutions Southwest. “When you start using these actuators with hydraulic fluid, though, any leak is noticeable, and if there is leakage over time, a pool of fluid can form.”

The environmental factor

Many of Flow-Tek’s customers using the Double-Acting, Spring-Return Automator in hydraulic applications are operators of large fuel loading and transit stations. These are the massive storage facilities where tankers come to load up fuel and haul it to your local gas stations. As facilities are closely monitored by the EPA (United States Environmental Protection Agency), any leakage at these is a huge concern.


About Flow-Tek

Flow-Tek is a division of Bray International and is based in Houston, Texas.

Flow-Tek‘s technologically advanced ball valve design is the product of a highly evolved research and development program. Each valve incorporates premium components from certified vendors. The components that go into a Flow-Tek valve must pass a rigorous multiple incoming quality inspection procedure.

Computer aided design technology increases the accuracy and decreases product cost. All parts are precision machined on modern numerical control machinery - all manufactured in strict adherence to internationally recognized standards and specifications, including: ANSI/ASME, API, NACE, and ISO. Each valve is assembled and tested by a dedicated craftsperson.

Find out more at

flow-tek.com

For more information on QUAD-RING® go to Products/Product Range/ Static Seals at

tss.trelleborg.com

A simple sealing solution eases a big worry

Flow-Tek’s Double-Acting, Spring-Return Automator has a center pinion with an O-Ring on the top and the bottom of the housing. When the pinion rotated back and forth while in action, in hydraulic actuation, there was a small amount of leakage around the O-Ring. This was not acceptable, so Trelleborg Sealing Solutions Southwest was approached by Flow-Tek to develop a sealing configuration to correct this problem.

A big task was to come up with a solution that fixed the issue for both the new actuators as well as provided a retrofit kit for existing actuators already in service. Several standard sealing elements were tried. The most effective solution proved to be the use of a QUAD-RING® as a back-up seal. In tests the QUAD-RING® successfully contained the hydraulic fluid in all of the actuators in excess of 100,000 cycles.

“This simple solution saved a valued account for Flow-Tek,” said Cliff Johnston, Engineering Manager for Flow-Tek.


Cut-away of Flow-Tek’s Double-Acting, Spring-Return Automator

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The United States Environmental Protection Agency is the leader of America’s environmental science, research, education and assessment efforts.

The EPA:

Develops and enforces environmental regulations

Offers financial assistance for research grants, environmental education projects and environmental services, etc.

Conducts environmental research

Sponsors environmental programs and partnerships

Educates the public on environmental issues

Publishes information

What is the EPA?

epa.gov

The QUAD-RING® is used as an alternative to an O-Ring. It is a double acting four lip seal for static and dynamic applications. It has an advantage over an O-Ring in certain applications, preventing movement within the groove, providing higher seal efficiency and lower friction. These seals are available in a wide range of elastomer compounds to AS 568 B and BS 1806 standards.

® Trade Mark of Quadion Corporation

The X-Men

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just around the corner at your local Trelleborg Sealing Solutions.Welcome! Directly at check-in you will meet our friendly, helpful Sales and ApplicationEngineers who globally deliver equally high levels of service and technical support. Ourinternational network of over 70 facilities worldwide is at your service, wherever you are.We hope you enjoy your stay with Trelleborg Sealing Solutions and we look forward toseeing you again.

A pleasantsurprise awaits you…

Your Partner for Sealing Technology

Trelleborg Sealing Solutions

www.tss.trelleborg.com

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