Products / Flexitallic / Sigma®

PTFE Materials

For applications where chemical resistance is paramount, SIGMA® is the only option.

Utilising a unique manufacturing process exclusive to Flexitallic, SIGMA® represents the latest generation of biaxially orientated PTFE materials.

All components in the SIGMA® range are FDA compliant. The material's clean nature makes it ideal for use where product contamination is of concern, such as food, pharmaceuticals and electronics.

The chemical resistance and dimensional stability of the material ensures total sealing reliability and minimises fugitive emissions.


  • Sigma® 500
  • Sigma® 511
  • Sigma® 533
  • Sigma® 588
  • Sigma® 600


  • Engineered and Manufactured in the UK
  • Cryogenic to 260°C
  • Outstanding chemical resistance across pH range
  • Suitable for low bolt load applications
  • Materials available in a range of different sheet sizes and thicknesses
  • FDA compliant
  • Available for oxygen service
  • Easy to handle and cut

One Stop Sealing has vast experience providing sealing solutions to the chemical manufacturing industry.

We'll work with you to see your project through.

Call us on 01482 610990 or request a callback.