| 摘要 |
A rubber ring-shaped seal is provided with a centrally disposed ring-shaped elastomeric tubular insert mounted therein. A helical coil spring is mounted in the insert so that part of the ring-shaped insert is between the helical coil spring and the work-contacting surfaces of the seal. The seal is mounted on formations formed on a tubular housing which serves as a connector. These formations define seal-receiving channels which position the seal rings in the housing.
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