| 摘要 |
PURPOSE:To provide a seal member having a high sealing effect by using an economical square-section ring by inserting such a square-section ring made of resilient material into a groove formed on the outer surface of a circular base body so that one of the corners of the square-section ring may work as a linear seal. CONSTITUTION:A seal member consists of a square ring 1 which has a cross section of nearly square and a base body 2 having a V-shaped groove 21 on its circular outer surface. The square ring 1 is rotated by about 45 deg. about the center axis of the square cross section, and is inserted into the V-shaped groove 21 of the base body 2 in such a form to be fixed in said groove by virtue of the inherent resilience of the square ring. As the sealing part of the square ring 1 is formed by an upper outer corner 1a of the four corners, the sealing part becomes a linear seal to provide a high sealing effect.
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