초록 ▼

A sealing gasket for insertion into a circumferentially continuous groove of a flange joint for joining axially aligned tube ends, the flange joint being of the type having axially opposed flanges at the tube ends to form a groove there between when the joint is assembled, the groove being formed by

A sealing gasket for insertion into a circumferentially continuous groove of a flange joint for joining axially aligned tube ends, the flange joint being of the type having axially opposed flanges at the tube ends to form a groove there between when the joint is assembled, the groove being formed by axially opposed seal faces and radial end faces of the flanges, the groove comprising a groove first portion that is open to an interior flow passage of the tubes and a groove second portion that extends radially outward from the groove first portion, the gasket having a gasket first portion that seals the groove first portion and a gasket second portion that extends from the gasket first portion and into the groove second portion; the gasket second portion being axially compressed when the joint is assembled and engaging with the radial end faces to produce a radial compression of the gasket; the gasket second portion having a volume that is less than volume of the groove second portion to form an expansion space in the groove second portion when the joint is assembled.

대표청구항 ▼

[ We claim:] [1.] A flange joint and gasket for joining and sealing tube or pipe ends that define an axial flow passage there through, comprising:a first annular flange and a second annular flange, each of said flanges being at a respective one of the tube ends; said flanges having axially opposed e

[ We claim:] [1.] A flange joint and gasket for joining and sealing tube or pipe ends that define an axial flow passage there through, comprising:a first annular flange and a second annular flange, each of said flanges being at a respective one of the tube ends; said flanges having axially opposed end faces and adjacent radial end walls that define a circumferential groove when the joint is assembled;said groove having a first portion open to the flow passage of the tubes and having a second portion that extends radially outward from said groove first portion, said groove second portion being radially bounded by said radial end walls; anda polymeric gasket to seal the assembled joint to prevent loss of fluid from the flow passage of the tubes, said gasket having a gasket first portion that seals said groove first portion and having a gasket second portion that extends from said gasket first portion and into said groove second portion;said gasket first portion comprises a rib that is axially compressed when the joint is assembled, said rib when under compression in the assembled joint being radially displaced to form a subtatially flush bore line seal that is contiguous with interior surfaces of the tubes; andsaid gasket second portion being axially compressed when the joint is assembled and engaging with said radial end walls to produce a radial compression of said gasket; said gasket second portion having a volume that is less than volume of said groove second portion to provide an expansion space in said groove second portion when the joint is assembled.