| 摘要 |
PURPOSE:To facilitate escape of an internal fluid at the time of a sealing performance test by providing a seal surface between an apparatus body to be sealed and a cover member with a continuity groove for connecting the outside and inside of the apparatus. CONSTITUTION:An apparatus body 11 includes an opening 11a to be sealed, the periphery of which is provided with a cover member 12 secured thereto. A contact surface of the cover member 12 with the apparatus body 11 is provided with a line groove 12a for positioning a seal member 13 and with one fluid continuity groove 14 for connecting the inside and the outside of the apparatus body 11. |
