| 摘要 |
PROBLEM TO BE SOLVED: To secure high sealability even when an aperture is big while securing durability of a sealant when an aperture is small.SOLUTION: A seal structure 1 includes: a pair of abutting surfaces 11 abutted to each other; a seal groove 21 formed in an in-plane direction of the abutting surfaces 11; and a sealant 31 spread along the seal groove 21. In the seal structure 1, the seal groove 21 is provided with a depth change part 22 formed such that a groove depth gradually becomes shallow as approaching the front of an inflow direction A of water, the sealant 31 is spread along the seal groove 21 such that a sealant height gradually becomes low as approaching the front of the inflow direction A, the sealant height before deformation of a part spread inside the seal groove 21 is greater than a seal groove depth, and an outer side end face positioned on the opposite side of a groove bottom surface of the seal groove 21 is formed roughly in parallel with the abutting surfaces 11. |
