Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-09-10
1994-01-04
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277204, 277233, 277235R, F16J 1512
Patent
active
052754235
ABSTRACT:
A spiral wound gasket comprises an annulus constituted by a plurality of superposed turns of a profiled metal strip wound upon itself to form a spiral and, interposed between at least some of said superposed turns, a number of turns of a relatively soft sealant material in strip form, the width of said metal strip being selected so that prior to use the wound metal spiral is essentially flush with the surface of an associated guide ring and the width of the strip of relatively soft sealant material being selected so that prior to use, it projects a significant distance on both sides of the gasket from said superposed metal turns axially of said annulus. The preferred relatively soft sealant material is exfoliated graphite foil or a fluorocarbon resin, unsintered PTFE being particularly preferred. The sealant material preferably projects from the metal spiral to define an overall gasket thickness on the order of 25 to 40 percent greater than that of the guide ring.
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patent: 5161807 (1992-11-01), Allen et al.
Brochure of Flexitallic Gasket Company Inc. .COPYRGT.1979 Flexitallic Spiral-Wound Gaskets with Flexicarb.TM. Filler.
British Standard Specification relating to materials, dimensions, markings and packaging of spiral wound gaskets, BS3381:1989.
Allen Kurt
Stephan Walter
Cuchlinski Jr. William A.
Flexitallic Inc.
Folker James K.
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