| 摘要 |
In the present packing hold structure, in a packing, there are provided projecting portions which respectively project toward the two mutually opposing inner surfaces 13 of a packing storage groove 13, and a dimension between the two projecting portions is set larger than the width dimension 13 of the packing storage groove 13. While the packing is stored within the packing storage groove, the projecting portions of the packing are respectively pressed against the two inner surfaces of the packing storage groove 12, thereby allowing the packing 12 to be held by itself within the packing storage groove.
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