Pipe joint and seal

Details Pipe joint and seal Pipe joint and seal

1983-03-25

1985-07-16

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277207A, F16J 1532

Patent

active

045292116

ABSTRACT:
Flexible seals for joints in pipes for example spigots, flange and sleeve joints are disclosed. A ring seal for seating in the seal groove as a pipe joint between a first pipe and a second pipe consists of a ring body, an annular cavity defined by the ring body, a pair of annular sealing lips axially spaced on the ring body and joined by a midportion of the body and a passage through the ring body defines a fluid path from the zone between the sealing lips to a test-orifice in one of the pipes, flanges or sleeve. Various configurations of seals are disclosed.
A method of pressure testing the joint is disclosed. A method of charging the joint with root growth inhibiting chemical is disclosed.

REFERENCES:
patent: 1818985 (1931-08-01), Burnish
patent: 1945293 (1934-01-01), Pierce
patent: 4063743 (1977-12-01), Petros

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