Secondary seal with mechanical gas seal

Details Secondary seal with mechanical gas seal Secondary seal with mechanical gas seal

1997-01-22

1997-12-23

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 87, F16J 1532

Patent

active

057000131

ABSTRACT:
A secondary seal for use in a high temperature and pressure environment, including only non-elastomeric elements, such as an annular wound spring essentially enclosed on three sides by a polymer cladding. Two lips surround the spring, while permitting an exposed spring section to maintain direct contact with a radial wall surface of a disc which retains the secondary seal disposed annularly around the back face of a seal primary ring. Optional ridges having flat sealing surfaces on one sealing surface of the secondary seal defines a number of discrete annular cells to provide a cascading pressure profile across the sealing surface.

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"Metal Springs Energized Seals Design Handbook", Green, Tweed & Co., Kulpsville, Pennsylvania, 19443-0305, Brochure, p. 4-5.
"Advanced Products EnerSeal Handbook", Advanced Products Co., Inc. North Haven, Connecticut 06473, Brochure, pp. B-1, B-2, C-1, C-2, D-1 through D-4.
"Rotary Variseal Selection Guide", American Variseal Co., Inc. Broomfield, Colorado 80038, Brochure pp. 7-8.

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