PTFE is a superior O-Ring material not affected by most chemicals. It can be used at temperatures up to 500°F (260°C). It has the lowest coefficient of friction of any solid material. Lubrication is less critical and can sometimes be omitted.
|ASTM D1418 Designation||FEP|
|ASTM D2000/SAE J200 Type, Class||-|
|Hardness (Shore A)||98|
|Min Temp.||-300°F (-184°C)|
|Max Temp.||450°F (232°C)|