| 摘要 |
A pre-assembled tubing coupling or fitting including a sleeve, a retaining ring, a resilient sealing ring disposed external to said retaining ring, and a cap or plug. The cap is disposed to limit axial movement of the sealing ring and the coupling is pre-assembled so that upon insertion of a conduit into the coupling, an interference fit is formed between the conduit and the retaining ring and a seal is formed between the sleeve and the conduit, without the necessity of further assembly or tightening of the cap.
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