| 摘要 |
The sealing ring is initially made with two arms which are oriented to define a fold. When in place between two overlapping pipes, the inwardly directed arm is rolled outwardly into coaxial relation with the unfolded arm in order to provide a tight seal between the two pipes. The seal ring may be initially formed with a U-shaped cross-section or with a cross-section in which one arm is disposed transverse to the other arm. |
