Low stress to seal expanded PTFE gasket tape

Details Low stress to seal expanded PTFE gasket tape Low stress to seal expanded PTFE gasket tape

2007-02-20

2007-02-20

Vo, Hai (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S318600, C428S319300, C428S319700, C428S317900, C277S608000

Reexamination Certificate

active

10798917

ABSTRACT:
A low stress to seal, unitary gasket tape is provided that is particularly suited for use in form-in-place gaskets. The gasket tape preferably comprises at least two joined porous expanded polytetrafluoroethylene (ePTFE) tapes aligned along tape side surfaces and a substantially air impermeable layer there between. The plane of expansion of the ePTFE is substantially parallel to the flange surface providing longitudinal and transverse strength. The substantially air impermeable layer prevents fluid from permeating through the gasket in the radial direction.

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