PTFE Envelope Gasket with core material of flexible materials (Asbestos; Non-asbestos; Rubber, etc. ), which is wrapped by PTFE.

Typical Applications
It is mainly used as a gasket for tower, groove and all kinds of equipments of strong acid, halogen corrosive liquids or anti-contaminated food flanges. It is widely used in the chemical, petrochemical, pharmaceutical and food industries.

PTFE Envelope Gasket Styles
SUNWELL 1320Y: This is one of the most frequently used and economic types. PTFE Envelope Gasket applies to use in every kind of occasion with lower temperature and lower pressure. Insert materials can be used by customers request.
SUNWELL 1320UR: It applies to with large dimension gaskets which are used in the chemicals with poison.
SUNWELL 1320UE: This type is used with the thick material embedded, it can reduce the innder flanges residue.

PTFE Envelope Gasket Specification
Temperature: -100~260oC
Max. Pressure: 50bar
Compressibility: >/=20%
Recovery: >/=30%
Stress release: </=45%
Leakage rate: </=1x10-3 cm3/s

More information of PTFE envelope gaskets, please feel free to contact SUNWELL.