Composite gasket and fitting including same

Details Composite gasket and fitting including same Composite gasket and fitting including same

1985-01-18

1987-09-15

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, 285110, 285231, 285379, F16J 1532

Patent

active

046934839

ABSTRACT:
A composite gasket for forming a seal between a pipe bell 52 and a spigot 58 comprises a major portion 12 of non-elastomeric plastic material and a minor portion 14 of elastomeric material. The minor portion is axially encased by the major portion. The minor portion includes a sealing lip 16 extending radially inwardly from the major portion. The composite gasket can be manually inserted within a preformed grooved bell or the grooved bell can be formed over the gasket while the gasket is mounted on a mandrel. The composite gasket is particularly useful with relatively large diameter pipe systems.

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