| 摘要 |
<p>The present invention provides a sealing structure that permits easy fitting of the insertion member into the reception member and that prevents damage to the insertion member and the reception member. The insertion member includes a first larger-diameter columnar portion, a first smaller-diameter columnar portion, and a first step portion. The reception member includes a second larger-diameter cylindrical portion, a second smaller-diameter cylindrical portion, and a second step portion. An accommodation region for accommodating an O-ring is defined by an outer circumferential surface of the first smaller-diameter columnar portion, an outer surface of the first step portion, an inner circumferential surface of the second larger-diameter cylindrical portion, and an inner surface of the second step portion.</p> |
