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Turcon® Variseal®

Product Announcement from Trelleborg Sealing Solutions

Turcon® Variseal®-Image

Turcon® Variseal® is available in many different varieties. Here are just a few:

Turcon® Variseal® offers major benefits.

These include:

  • Excellent leak tightness
  • High resistance to wear
  • No extrusion into gaps
  • Withstanding aggressive and abrasive process media
  • Very good temperature capabilities
  • Low friction
  • Compact form
  • Simple installation

Turcon® Variseal® is available in a range of geometries and designs that allow the optimum profile to be selected for each application. They can be produced from a wide range of Turcon® materials, our proprietary PTFE based compounds. These are specially formulated for sealing elements and offer superior characteristics specifically matched to the demands of our customers.

When required, Variseal® can also be manufactured in Zurcon®, our proprietary polyethylene-based material.

Turcon® Variseal® has three main design characteristics:

1. Application specific U-shaped seal profile

2. Spring geometry suited to the particular application

3. Proven high-performance Turcon® or Zurcon® polymers


The different types of Variseal® combined with the properties of Turcon® and Zurcon® materials offer design engineers a wide range of solutions to a large number of applications.

The most important characteristics of Variseal® are listed below:

  • Very low coefficient of friction
  • Good dynamic and static sealing
  • Capable of sealing at high speeds up to 15 m/s / 49 ft/sec
  • Almost universal chemical compatibility
  • Operating temperature of -253 °C up to +300 °C /-423°F to 572°F
  • Very good thermal resistance
  • Permanent elasticity unaffected by contact with chemicals
  • Good aging characteristics
  • Low compression set
  • Capable ofwithstanding high pressures above 200MPa /2,000 bar; 29,000 psi when using back-up rings
  • Very good dry-running properties
  • Can be installed in grooves according to MIL-G-5514 and DIN 3771