Silicon rubber gasket and material

Details Silicon rubber gasket and material Silicon rubber gasket and material

1984-11-16

1986-04-08

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 1, 277DIG6, 156329, 428405, B32B 516, B32B 900, F16J 1512

Patent

active

045807949

ABSTRACT:
An improved silicone rubber gasket having improved oil resistance, permeability characteristics and compressive set characteristics. The silicone rubber composition utilized is made from an organopolysiloxane gum, a silica filler, a quantity of hollow microspheres, and a curing catalyst. The polysiloxane, microspheres, and filler material are first blended to form the uncured rubber compositions. The rubber composition is then mixed with a suitable catalyst and cured in the desired shape. The microspheres are selected to have the requisite strength for being milled or mixed into the silicone rubber compound without fracturing.

REFERENCES:
patent: 3524794 (1970-08-01), Jonnes et al.
patent: 3986213 (1976-10-01), Lynch
patent: 4049856 (1977-09-01), Adams
patent: 4180211 (1979-12-01), Olcott et al.
patent: 4220342 (1980-09-01), Shah
patent: 4356116 (1982-10-01), Beers
patent: 4451542 (1984-05-01), Ishida et al.
patent: 4451584 (1984-05-01), Schaefer

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