PURPOSE: To reduce a cost by holding air-tightness over a long period, and easily realizing requested dimensional accuracy and surface finish accuracy. ;CONSTITUTION: A seal member S mounted (n the periphery of a male type fitting part 2 of a connector and a collar 5 covering a point end periphery of the male type fitting part are provided, and the collar has a tapered part 5a tapering the periphery, to utilize the collar 5 as a holding member for holding the seal member S.;COPYRIGHT: (C)1996,JPO
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