Lip seal with reinforced backup

Details Lip seal with reinforced backup Lip seal with reinforced backup

1993-08-05

1996-01-02

Gutierrez, Diego F. F.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277205, 92254, F16J 1532

Patent

active

054801630

ABSTRACT:
A replaceable sealing member is disclosed which includes a body, lip seal and bonded reinforcement section having a skirt portion and a lip support surface. The skirt portion and lip support restrict elastomeric flow of the body and lip seal portion of the sealing member to prevent extrusion damage. A radially extending flange, from which the skirt portion axially projects, is bonded to the body and has an abutment surface on one side for abutment against a shoulder in a metallic support, such as in a mud pump piston hub, for limiting axial movement of the replaceable sealing member.

REFERENCES:
patent: 2189839 (1940-02-01), Sharp et al.
patent: 2330197 (1943-09-01), Allen et al.
patent: 2808301 (1957-10-01), Bowerman
patent: 2815973 (1957-12-01), Jackson
patent: 4027816 (1977-06-01), Slator et al.
patent: 4053166 (1977-10-01), Domkowski
patent: 4143586 (1979-03-01), Zitting
patent: 4281590 (1981-08-01), Weaver
patent: 4346647 (1982-08-01), Weaver
patent: 4428590 (1984-01-01), Pippert et al.
patent: 4596395 (1986-06-01), Miser
patent: 4601235 (1986-07-01), Roberts
"Southwest--Fail-safe Slush Pistons," Composite Catalogue of Oil Field Equipment and Services, vol. 4, p. 6506. World Oil, 1980-81.

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