Pipe joints or couplings – Particular interface – Tapered
Patent
1983-05-19
1984-07-10
Scanlan, Jr., Richard J.
Pipe joints or couplings
Particular interface
Tapered
285355, 285383, F16L 2500
Patent
active
044589255
ABSTRACT:
A pipe joint with premium threads having both metal-to-metal and polymeric seals to block fluid leakage through the joint. A polymeric seal ring is preferably carried within an annular groove in the box end. Metal sealing surfaces, each having a different inside diameter, are provided on opposite sides of the annular groove to form metal-to-metal seals with two compatible metal sealing surfaces on the exterior of the pin member. The joint is thus characterized by two metal-to-metal seals formed on opposite sides of the annular groove to trap the seal ring therebetween. The metal-to-metal seals cooperate to prevent undesired extrusion of the seal ring.
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Grimmer George G.
Raulins George M.
Felger Thomas R.
Gay M. H.
Otis Engineering Corporation
Scanlan, Jr. Richard J.
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