| 摘要 |
<p>FLUID COUPLINGA fluid coupling capable of reliably finding absence of the gasket, if exists, in the leak test is provided. Butted end surfaces of coupling members 1, 2 have annular sealing protrusions 7, 8 and anti-overfastening annular protrusions 9, protruded further than the annular sealing protrusions 7, 8, respectively. At least one of the anti-overfastening annular protrusions 9, 10 has a communication path 31 or 32 communicating internal space Si with external space So when both the anti-overfastening annular protrusions 9, 10 butt against each other.Figure 2</p> |
