| 摘要 |
<p>A sealing structure for performing sealing by a seal ring (3) installed in a dovetail groove (12), in which the seal ring (3) is less likely to come out from the dovetail groove (12), the seal ring (3) is easily installed in the dovetail groove (12), particles are less likely to be produced, and the seal ring (3) is prevented from being erroneously installed. The seal ring, made of a rubber-like elastic material, is installed in the dovetail groove (12), and the seal ring (3) has a convex bottom section (3a) made to be in intimate contact with a groove bottom (12c), side projection sections (3b, 3c) formed on both sides of the bottom section and made to be in intimate contact with inner slope surfaces (12d, 12e) of the dovetail groove (12), and a head section (3d) formed in a convex shape, the head section projecting between those ends of both side projection sections (3b, 3c) that are on the side opposite the bottom section (3a), the head section being exposed to the outside of the dovetail groove (12). The width W 3 of the head section (3d) is smaller than the width W 1 between groove shoulders (12a, 12b), and the width W 4 between the apexes of the side projection sections (3b, 3c) is greater than the width W 1 .</p> |
