High temperature gasket

Details High temperature gasket High temperature gasket

1980-06-16

1982-03-02

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277DIG6, 524 7, 524 8, 524 2, 524 35, F16J 1510, C08L 100

Patent

active

043175759

ABSTRACT:
An asbestos-free gasket is produced from a composition which comprises from about 5% to about 20% of an organic latex binder, from about 5% to about 35% of a cellulosic fibrous material, from about 0% to about 30% of mineral wool, at least about 50% of an inorganic filler, and from about 0 to about 5% of a coloring additive. The percentages being on a dry weight basis of the gasket. The organic materials are present in an amount no greater than 40% of the total dry weight of the gasket and preferably no greater than 30%. The inorganic filler is an inactive additive, stable at a temperature greater than 1700.degree. F., such as Portland Cement, diatomaceous earth, silicates, carbonates, barytes and mixtures thereof. Preferably the inorganic filler is a mixture of barytes and talc in a ratio of from about 1 to 0, to 3 to 1.

REFERENCES:
patent: 1379590 (1921-05-01), Clapp
patent: 2381248 (1945-08-01), Bascom
patent: 3217832 (1965-11-01), Whitney
patent: 3451458 (1969-06-01), Stueber
patent: 3767211 (1973-10-01), Amphlett
patent: 3971758 (1976-07-01), Anderson et al.
patent: 4156533 (1979-05-01), Close et al.
patent: 4250064 (1981-02-01), Chandler

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