Low stress / anti-buckling spiral wound gasket
OwnerSteven Suggs, Reid Meyer +1inventors
InventorsSteven Suggs, Reid Meyer, Steven Kolb
Life of this patent
Estimating the term…
Abstract
A spiral wound gasket (10) with increased resistance to an inward buckling while sealing flanges at low stress levels, in which an outer guide ring (14) for positioning the gasket within the bolt circle of a bolted flange connection connects to a sealing element (12) having a core (16) that contributes to gasket recovery and made of a spirally wound, chevron-shaped band overlaid by a layer (20) of sealing material covering at least a portion of opposing sides of the core to conformably seal contact faces of flanges to be sealed.
Claims29
A spiral wound gasket comprising:
- a resilient core comprising an elongate band spirally wrapped with overlying turns having at least portions of adjacent turns in contacting relation;
- an outer guide ring mounted to an outer periphery of the resilient core;
- and
- an overlay of a sealing material covering at least a portion of opposing faces of the core for effecting conforming seals of flanged pipe connections.
A spiral wound gasket for sealing flanged pipe connections, comprising:
- a core made of an elongate band spirally wrapped with overlying turns to define opposing faces and secured at respective portions of an inner diameter and an outer diameter, the band having a projecting portion intermediate opposing lateral sides, whereby the spiral defines contact surfaces between adjacent turns;
- an outer guide ring attached to an outer periphery of the core;
- and
- an overlay of a sealing material covering at least a portion of the opposing faces of the core, the sealing material overlay mechanically engaged to the sides.
A spiral wound gasket that seals with low flange loading and having reduced susceptibility to inward buckling, comprising:
- multiple windings of metallic filler to define a spiral sealing element, an outer guide ring mounted to an outer periphery of said sealing element;
- and
- an overlay of flexible graphite applied to at least a portion of the opposing outer surfaces of the said sealing element.
Dependencies are inferred from the claim text.