Collapsable seal member

Details Collapsable seal member Collapsable seal member

1983-12-08

1990-09-04

Tarcza, Thomas H.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 34, F16J 1546

Patent

active

H00008141

ABSTRACT:
A hollow, collapsable seal member normally disposed in a natural expanded state offering fail-safe pressure sealing against a seating surface and adapted to be evacuated by a vacuum force for collapsing the seal member to disengage the same from said seating surface.

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patent: 4269419 (1981-05-01), Brant

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