PTFE recognized as the first fluorocarbon material in the world and referred to as PTFE or TFE, it is the most chemically resistant plastic known. It has a working temperature range of minus 400°F to 500°F, excellent thermal and electrical insulation properties and a low coefficient of friction.
With a non-stick surface, very few materials will adhere to it and those that stick can easily be peeled or rubbed off. PTFE's mechanical properties are lower than other engineering plastics, but that can be improved by adding fillers such as glass fiber, carbon, graphite, molybdenum disulfide and bronze.
Common applications include, food processing, electrical parts, insulators, medical components, seals, bearings and high heat situations.

PTFE Gasket specification:

1.Made of Virgin ptfe.
2. Color: white
3.Mainly used for valve or electronics
4.Density: 2.15 - 2.20g/cm3
5. Temperature: -180 - 260°C
6.Tensile strength: >15Mpa
7. Elongation at break: 200%
8.Voltage at beak down: >10KV/mm
9.Dimension: According to client's requirement.