Sealing ring with spaced resilient and rigid portions

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

277180, 277188A, 277228, F16J 1512

Patent

active

048261823

ABSTRACT:
A sealing ring comprising a resilient ring and a pair of axially spaced coaxial rigid rings secured to the outside of the resilient ring. The rigid rings are spaced from end surfaces of the resilient ring a distance substantially less than the axial extent of a rigid ring. The rigid rings have an axial extent substantially greater than their radial extent. In one embodiment, the resilient ring has on its outer surface an integral annular rib that is disposed between and is in contact with both of the rigid rings, the radially outer surface of the rib being flush with the outer surfaces of the rigid rings. In another embodiment, there is a free space between the rigid rings in the undeformed condition of the resilient ring.

REFERENCES:
patent: 2709630 (1955-05-01), Patterson
patent: 2823058 (1958-02-01), Ecker et al.
patent: 3782735 (1974-01-01), Novosad
patent: 3782788 (1974-01-01), Koester et al.
patent: 4034993 (1977-07-01), Okada et al.
patent: 4305595 (1981-12-01), Miyagishima et al.
patent: 4493373 (1985-01-01), Jackson
patent: 4531749 (1985-07-01), Jackson et al.

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