Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1991-09-30
1992-11-10
Shoap, Allan N.
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
051618079
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 thickness 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 thickness 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, which projects from the metal spiral to define an overall gasket thickness on the order of 25 to 40% greater than that of the guide ring.
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Brochure of Flexitallic Gasket Company. .COPYRGT.1979 Flexitallic Spiral-Wound Gaskets with Flexicarb.TM. Filler.
Allen Kurt
Stephan Walter
Flexitallic Inc.
Folker James K.
Shoap Allan N.
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