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CONSTRUCTION:

Slit in center from outside： An economical solution for lower pressure applications.
Cut PTFE into square form： For use with medium and higher pressure.
Heated & welded at one joint： Normal for DN≥200mm.

APPLICATION & PROPERTIES:

PTFE Envelope Gaskets are the ideal solution for applications demanding virtually 100% chemical resistance and where the mechanical properties of a compressed gasket material are also needed. They perform well in the food and process industries where contamination of the medium cannot be permitted, Suitable for medium strong alkalis, cryogenic fluids, oxygen, chlorine gas etc.

◆Virtually 100% chemically resistant.

◆Temperature range from- 200~+250oC depending on the core.

◆Mechanical strength dependent on core selection.

◆Pressure≤4 Mpa