Patent ID: 6237966
Filing Date: 2001-05-29
Classification: F16L,Y10S,Y10T

Abstract:
A pipe joint comprising:a first pipe section;a second pipe section operatively connected to the first pipe section;a gasket sealingly engaging the first pipe section and the second pipe section in a manner for resisting fluid leakage therebetween, the gasket having a first portion of a first durometer hardness and a second portion of a second durometer hardness, the first durometer hardness being less than the second durometer hardness, the first and second portions being formed by co-extrusion, the first portion comprising an annular tongue and the second portion comprising an annular substrate supporting the annular tongue, the annular substrate including an annular inwardly facing surface and an annular outwardly facing surface, the tongue being affixed to and extending radially from the annular outwardly facing surface of the annular substrate, the annular substrate including first and second annular stiffening portions which are stiffer than the first portion and are axially spaced from the tongue.