Sigma® 500 Sheet Material (PTFE)
![Sigma® 500 Sheet Material (PTFE)](https://flexitallic.com/wp-content/uploads/site//1/Flexitallic_Sigma_500-scaled-893x1024.jpg)
Sigma® 500 is a high performance biaxially orientated sheet sealing material containing PTFE and hollow glass microspheres.
Sigma® 800 Expanded Sheet ePTFE
![Sigma® 800 Expanded Sheet ePTFE](https://flexitallic.com/wp-content/uploads/site//1/Flexitallic_Inventory_2018__Sigma_800_Expanded_Sheet_ePTFE-1024x1024.jpg)
Sigma® 800 Sheet is a high quality expanded PTFE sheet sealing material (ePTFE)