| 摘要 |
PROBLEM TO BE SOLVED: To prevent a gasket body from being axially detached from a groove by elastically bending the lip by passing a tab when a gasket body is axially inserted into the groove, and receiving the gasket in the annular territiry of the groove enlarged by adjoining the tab to the inner side wall of the lip and engaging the tab with the lip. SOLUTION: Two tabs 40 extended with angles nearly in the radial direction from a gasket body 12 are spacedly arranged. The tab 40 is engaged with a lip 27, and when the gasket body 12 is axially inserted into a groove 11 so as to be received in the groove 11 without necessity to extend the gasket body 12, the tab 40 pass through the lip 27 to elastically bend the lip to be received, and the tab 40 is engaged with the inner side wall of the lip 27. Hereby the gasket body 12 can be prevented from being axially detached from the groove 11.
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