Trelleborg?s compact double-acting piston seal was developed in response to increasing demands from high-pressure hydraulic applications.

A new ?best-in-class? seal for hydraulic cylinders with the ability to ?thrive in unforgiving conditions? has been launched by Trelleborg Sealing Solutions. The Zurcon? Glyd Ring? D comes with a combination of performance and service life through optimised contact pressure and minimised heat generated from friction. The innovative design incorporates two special grooves in the D-shaped profile of the seal to sustain an oil film for sufficient lubrication of the seal against its counter surface, ensuring adequate friction.

The compact double-acting piston seal, which has been subjected to extensive laboratory testing and long term field testing in monitored applications, was developed in response to increasing demands from high-pressure hydraulic applications. Machines, equipment and motors are now being fitted with more powerful hydraulic cylinders, means the hydraulics are subject to higher pressures and temperatures.

The seal is manufactured from Zurcon? Z13 polyurethane (PU) material, which has been specially developed to cope with pressures of up to 500 bar/7,250 psi at both sides of the seal and at temperatures up to 120?C/248?F. This gives the seal long life, even under demanding conditions. Offering superb mechanical and elastic properties, the seal loses none of its resilience over time and can be used in cylinders with lower quality inner walls.

Andrew Longdon, UK Technical Manager at Trelleborg Sealing Solutions, said, ?We have made subtle but significant changes to our previous Glyd Ring? compact double-acting piston seal, leading to a new and improved best-in-class seal for hydraulic cylinders with the ability to thrive in unforgiving conditions. In the latest more powerful hydraulic applications, high pressure is combined with elevated temperatures. Our new Zurcon? Z13 PU material used in Zurcon? Glyd Ring? D is specially developed to cope with this combination.

The pioneering seal was a joint development between Trelleborg?s research and development centre in Stuttgart, Germany, and their Polyurethane Centre of Excellence in Livorno, Italy.

Core industrial applications for Zurcon? Z13 Glyd Ring? D include construction machinery, earthmoving equipment, mobile cranes, forklift trucks and any other solutions involving mobile hydraulics. The seal offers superior resilience and good friction properties. It is compatible with hydraulic, mineral, synthetic and water-based fluids and with a hardness of 60 shore D offers outstanding wear resistance, excellent extrusion properties and hydrolysis resistance.

Trelleborg Sealing Solutions and Trelleborg Group
Trelleborg Sealing Solutions is one of the world?s leading developers, manufacturers and suppliers of precision seals. It supports its aerospace, industrial and automotive customers through over 20 production facilities and more than 40 marketing companies globally. Within its portfolio are some of the longest established sealing brands, including Busak+Shamban, Chase Walton, Dowty, Forsheda, GNL, Palmer Chenard, Shamban, Skega and Stefa along with a large number of proprietary products and materials such as Turcon, Zurcon, Orkot, Isolast, Stepseal and Wills Rings.

Trelleborg is a world leader in engineered polymer solutions that seal, damp and protect critical applications in demanding environments. Its innovative solutions accelerate performance for customers in a sustainable way. The Trelleborg Group has annual sales of SEK 30 billion (E3.25 billion, $3.60 billion) in over 40 countries. The Group comprises five business areas: Trelleborg Coated Systems, Trelleborg Industrial Solutions, Trelleborg Offshore & Construction, Trelleborg Sealing Solutions and Trelleborg Wheel Systems, and the operations of Rubena and Savatech. The Trelleborg share has been listed on the Stock Exchange since 1964 and is listed on Nasdaq Stockholm, Large Cap.

For further information contact:
Rohit Nair Sr. Manager Marketing
Trelleborg Sealing Solutions India
Email: rohit.nair@trelleborg.com