Material for a gasket coated with foam rubber
AssigneeNichias Corporation
InventorAtsushi Omura
Life of this patent
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Abstract
In order to improve the sealing property and the resistance to pressure of a gasket coated with foam rubber layers, the foam rubber layers are formed on both surfaces of a metal plate from a rubber which is swollen by the medium to be sealed by the gasket, e.g. a rubber having an oil swelling property such as an NBR, is used. In this way the sealing property thereof is improved.
Claims11
In a gasket for sealing a liquid medium comprising a metal plate and foam rubber layers provided on opposite surfaces of the metal plate, the improvement comprising the foam rubber layers containing carbon having a low reinforcing property and an inorganic filler blended therein and being swollen by the liquid medium being sealed by the gasket.
In a method of sealing a liquid medium with a gasket comprising a metal plate and foam rubber layers provided on opposite surfaces of the metal plate, the improvement comprising the steps of forming said foam rubber layers from a rubber which is swollen by the liquid medium and blending carbon having a low reinforcing property and an inorganic filler with the rubber.
Dependencies are inferred from the claim text.