Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
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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Cummings Scott
John Crane Inc.
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