PTFE Envelope Gasket (PTFE Envelop Gasket) are type of static seal. It is composed of elastic materials such as compressed non-asbestos sheet and a PTFE 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 areas for PTFE Envelope Gasket :
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.
Material ang type of PTFE envelope gaskets
V SHAPE, U SHAPE, PTFE ENVELOPE NON-ASBESTOS, EPDM, ASBESTOS ETC.
Application Data for PTFE Envelope Gasket :
| inspection item |
Unit |
Data |
| Bulk density |
G/CM3 |
1.90(±0.10)-for sheetl; 2.30(±0.20) for PTFE seal |
| colour |
------ |
Green,Blue,White |
| Pressure Limit |
Bar |
40 |
| Temperature Limit |
|
260 |
| PH Range |
------ |
0-14 |
| PTFE Seal thckness |
MM |
0.5(±0.10)/side |
|
Gasket Thickness
|
MM |
2(±0.10) or as customers request |
