Non-asbestos gasket

Details Non-asbestos gasket Non-asbestos gasket

2011-07-12

2011-07-12

Pickard, Alison K (Department: 3676)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for other than internal combustion engine, or...

C277S612000, C277S649000, C277S651000, C277S654000

Reexamination Certificate

active

07976028

ABSTRACT:
By improving a metal gasket having a corrugated portion which is advantageous in sealing property, a non-asbestos gasket in which the sealing property is further improved is provided. A non-asbestos gasket has a three-layer structured sealing portion S configured by: a core layer1A which is made of a plate of a metal, and which is formed into a concentric circle-like corrugated shape; and surface layers2, 3which are made of expanded graphite, and which are stacked on the front and back faces of the core layer, respectively. In an outer circumferential end of the sealing portion S, the core layer1A is protruded from the front and back surface layers2, 3toward an outer diameter side. In an inner circumferential end of the sealing portion S, the front and back surface layers2, 3are protruded from the core layer1A toward an inner diameter side, thereby covering the core layer1A.

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