High purity gas fitting with grooved gasket

Details High purity gas fitting with grooved gasket High purity gas fitting with grooved gasket

1997-04-21

1999-03-30

Knight, Anthony

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for a pipe, conduit, or cable

277626, 285328, 285917, F16L 1706

Patent

active

058878769

ABSTRACT:
A fitting is provided for a high purity gas system. The fitting includes first and second components having fluid passageways extending therethrough. Each of the first and second components includes a sealing face having a toroidally generated sealing bead extending unitarily thereabout. At least one nut is provided for urging the sealing faces toward one another. A metallic gasket is disposed between the respective sealing faces. The gasket includes opposed surfaces having annular grooves formed therein. The grooves are dimensioned such that a radially inner circumferentially extending surface on each groove engages a radially inner circumferentially extending surface on a respective toroidal sealing bead. As a result, dead spaces between the fitting and the gasket are eliminated. Additionally, any debris generated as the toroidal sealing beads slide over the gasket are urged outwardly and away from the fluid passages.

REFERENCES:
patent: Re34144 (1992-12-01), Leigh
patent: 5529284 (1996-06-01), Berger et al.
patent: 5720505 (1998-02-01), Ohmi et al.

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