Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1987-09-18
1989-07-18
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277195, 277198, 285140, 285335, 285351, F16J 1510, E21B 3300, F16L 1700
Patent
active
048487775
ABSTRACT:
A casing seal for use with a source of high pressure fluids with apparatus for preventing shredding of the seal with variations in fluid pressure. A T-shaped annular metal ring provides a multiplication of fluid pressure so pressure exerted on an elastomeric sealing ring is greater than the fluid pressure. This multiplication prevents gases from entering the elastomer and prevents shredding of the elastomer when pressure is released. The multiplication of pressure also forces the elastomer firmly against a casing and a casing head to provide a fluid-tight seal.
REFERENCES:
patent: 1725836 (1929-08-01), Solberg
patent: 3071386 (1963-01-01), Scannell
patent: 3492009 (1970-01-01), Beresnev et al.
patent: 4262690 (1981-04-01), Binegar
patent: 4436316 (1984-03-01), Karr, Jr.
patent: 4532987 (1985-08-01), Reed
patent: 4645214 (1987-02-01), Copley
Benefield Roy W.
Cain David E.
Huang Phillip F.
Montemayor Brenda K.
Myers Ray
FMC Corporation
Guernsey Lloyd B.
Kamp R. C.
Megley R. B.
Shoap Allan N.
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