Patent ID: 7389992

Claim:
A gasket comprising a plate having a flat surface, said plate being screwed to an opposing assembly member at a screw fixing portion, and a packing bonded to a peripheral area on the flat surface of said plate in a predetermined pattern, said packing including: a base portion bonded to the flat surface of said plate, a lip portion raised from said base portion and disposed at an outer peripheral side in a width direction of said packing, said lip portion being bent to an inner peripheral side of said plate when said lip portion is compressed by said opposing assembly member, and an extension portion extending from said base portion toward the outer peripheral side of said plate only near said screw fixing portion and an inflection portion of said packing, bottom surfaces of said base portion and said extension portion being contiguous on and bonded to the flat surface of said plate; said base portion near said screw fixing portion and an inflection portion does not tend to be peeled off from said plate when said lip portion is bent due to said extension portion preventing said base portion from being peeled off from said plate.