Dielectric pipe flange gasket
AssigneePikotek, Inc.
InventorGary A. Kohn
Life of this patent
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Abstract
This invention discloses a dielectric pipe flange gasket having the dual functions of providing a leak proof seal for the pipe flange joint and an electrically insulating barrier between flanges, which dielectric pipe flange gasket comprises a planar annular disc member of corrosion resisting metal sandwiched between two hard dielectric planar members respectively bonded to two faces thereof and a pair of ring seals made of dielectric elastomer respectively disposed in two annular seal grooves respectively included in two faces of the pipe flange gasket, wherein the depth of the grooves partially extend into the metallic planar annular disc member.
Claims9
A dielectric pipe flange gasket comprising in combination:
- (a) an annular disc of laminated construction including a metallic disc and a pair of dielectric linings respectively bonded to two faces of said metallic disc, and
- (b) a first ring seal disposed in a first seal groove included in one face of said annular disc in a coaxial arrangement and a second ring seal disposed in a second seal groove included in the other face of said annular disc in a coaxial arrangement, wherein said seal grooves have a dove tail shaped cross section with an opening in the cross section narrower than the bottom and depth partially extending into said metallic disc.
Dependencies are inferred from the claim text.