| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal member capable of sealing a clearance by compressing a valve part in a state of a fitting part of the seal member being firmly fitted to a recess even when a spigot is inserted into a socket. SOLUTION: The outer surface of the spigot 12 is inserted into the socket 5 without compressing the fitting part 8a and an intermediate part 8b, and the valve part 8c is compressed to seal the clearance. The fitting part 8a does not thereby shift from the recess 5a by the outer surface of the spigot 12 inserted in the socket 5, and the valve part 8c is compressed to seal the clearance in the firmly fitted state. COPYRIGHT: (C)2007,JPO&INPIT
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