Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Patent
1995-05-25
1998-09-01
DePumpo, Daniel G.
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
277567, 277582, F16J 1532
Patent
active
057999538
ABSTRACT:
The present invention involves a seal ring for sealing an annular space between two components. The seal ring includes an annular jacket, a spring, and a cap. The jacket includes an annular cavity defined by two annular lips. The spring is disposed within the annular cavity of the jacket. The cap is disposed over the annular lips, and encapsulates the annular cavity. The spring biases the lips against the cap to thereby seal the annular cavity. Either the cap or the jacket includes a pair of annular channels, and the other includes a pair of annular projections, so that the projections and channels interfit to thereby lock together the cap and jacket. The cap and jacket are made from a polymer material, although not necessarily the same polymer material. The spring may be cantilevered, helical ribbon coil, slanted coil, or silicone filled with one or more spring elements. The lips of the jacket may have flanges to trap the spring in the annular cavity. The cap may have a leading edge, multiple leading edges, or a chamfered design, with axial or radially inward or outward faceseals.
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American Variseal
DePumpo Daniel G.
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