Teflon® is PTFE (polytetrafluoroethylene).

Properties
Teflon® is exceptional because no chemical compound exists which affects this fantastic material. The permissible operating temperature of +260°C is extreme. Teflon® doesn’t absorb any moisture, even repels it, is nonstick and has a uniquely low coefficient of friction and furthermore is also non-flammable. Teflon® is available in a standard grade, when necessary with glass, bronze and graphite filling.