PTFE envelope gasket are type of static seal. It is composed of elastic materials such as compressed non-asbestos sheet, rubber, Ceramics, etc., and a PTFE envelope cove
PTFE, PTFE envelope gasket, dynamic sealing gasket has superior properties against chemical (not affected by all chemicals except molten alkali metal and fluorine at elevated temperature) and a wide working temperature range. (from –180~260℃) the coefficient of static and dynamic friction of PTFE are very low. PTFE is the best of the “non-stick” materials. It has excellent weathering and aging characteristics.
Application: PTFE envelope gasket is used to seal pipe flanges glass lined, PVC or FRP. Low bolt torque effecting a seal and chemical compatibility is a main characteristic of this type of gasket. PTFE envelope gasket, dynamic sealing gasket
Material ang type of PTFE envelope gaskets

FILLER MATERIALS	Non-asbestos compressed sheet, Compressed fiber sheet, Asbestos compressed sheet Neoprene, Reinforced graphite sheet ,Corrugated steel
V-TYPE
U-TYPE
L-TYPE

PTFE Gasket Expanded Graphite Cut Gasket Spiral Wound Gasket  Over Ring Joint Gasket   Serrated Gasket  Non-asbestos Gasket Asbestos Gasket  Oval,octagonal metallic gasket Spiral Wound Gasket