Closure seal for high pressure vessel

Details Closure seal for high pressure vessel Closure seal for high pressure vessel

1983-08-03

1984-08-07

Hall, George T.

Receptacles

Closures

Having gasket or packing

220 3, 220327, B65D 5300

Patent

active

044638710

ABSTRACT:
Sealing between an access opening in a pressure vessel and a closure member fitted in the opening is provided by an O-ring of perfluoroelastomer in an annular groove formed in a surface of the closure member. The sidewall of the groove on the low pressure side of the seal has a concave curvature in cross section so as to form a "hook" or lip which retains the O-ring in the groove and prevents creeping extrusion of the O-ring under prolonged exposure to high temperature and pressure fluid on the high pressure side of the seal, even with a clearance between the closure member and the access opening of up to approximately 1 percent of the diameter of the O-ring cross section.

REFERENCES:
patent: 2009877 (1935-07-01), Dodd
patent: 2273186 (1942-02-01), Fischer
patent: 2342186 (1944-02-01), Fischer
patent: 2956704 (1960-10-01), Boni, Jr.
patent: 2959322 (1960-11-01), West
patent: 3459325 (1969-08-01), Knoedler
patent: 3693822 (1972-09-01), Thillet
patent: 3698591 (1972-10-01), Morin
patent: 3915337 (1975-10-01), Parsels
patent: 4108327 (1978-08-01), Shonerd et al.
patent: 4240561 (1980-12-01), Hagstrom et al.

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