| 摘要 |
<p>A fluid coupling that allows a failure due to absence of a gasket to be reliably detected by a leak test is provided. Annular sealing projections (7, 8) and overtightening preventing annular projections (9, 10) with a larger projection amount than the annular sealing projections (7, 8) are provided on butting end faces of coupling members (1, 2). At least one of the overtightening preventing annular projections (9, 10) has communication passages (31, 32) communicating an inner space (Si) therein and an outer space (So) when the overtightening preventing annular projections (9, 10) are butted against each other.</p> |
