| 摘要 |
PROBLEM TO BE SOLVED: To provide a grommet of highly water-proof and dust-proof which is hard to come off. SOLUTION: A grommet 1 has a bellows structure and where flange parts 6 and 8 of grommet inners 2 and 4 are engaged with annular grooves 11 and 12 of a grommet outer 3 for one body. At least one pair of protruding parts 10 is provided in the radial outward direction of the flange parts 6 and 8. At least one pair of recessed parts 13 is provided in the radial outward direction of the annular grooves 11 and 12, corresponding to the protruding parts 10. |
