What is Sigma®?

Sigma® is the latest generation of biaxially orientated PTFE materials. It was developed to withstand temperature ranges from cryogenic to 260°C and to provide enhanced sealing capabilities across the entire pH range.

This FDA approved component is ideal for applications where contamination is a concern, including food, electrical and pharmaceutical. And finally, the non stick properties help to reduce downtime on shutdown.

Flexitallic Sigma® products we offer:

For applications where chemical resistance is paramount, Sigma® is the first choice. Explore the range of Flexitallic Sigma® products we offer and get in touch for more information.

Sigma® 500 – biaxially orientated sheet material made from PTFE and hollow glass microspheres

Sigma® 511 – biaxially orientated sheet material made from PTFE and silica filler.

Sigma® 533 – biaxially orientated sheet material made from PTFE and barium sulphate (barytes) filler.

Sigma® 588 – biaxially oriented PTFE sheet sealing material with high handling and low stress characteristics.

Sigma® 600 – biaxially oriented PTFE sheet sealing material with enhance low stress characteristics.

Benefits of Flexitallic Sigma® sealing

  • Manufactured in the UK, utilising a unique process which is exclusive to Flexitallic
  • Cryogenic to 260° C
  • Outstanding chemical resistance across pH range
  • FDA compliant
  • Materials available in range of sheet sizes and thicknesses
  • Suitable for low bolt applications