| 摘要 |
PROBLEM TO BE SOLVED: To obtain a desired sealability by pressing a packing by a proper force at all times. SOLUTION: A water channel sealing structure is provided with a first connection member having an inner face bottom part and a screw groove in an inner face side part, a stop part which is screwed into an inner face of the first connection member and comes into contact with the bottom part to stop screwing, and a second connection member having a pressing part pressing the packing by cooperating with the inner face bottom part of the first connection member, and a dimension of a recessed part in the pressing part is set to be shorter than a height of the packing by a predetermined dimension. |
