| 摘要 |
A tube coupling (10) for connection to a conduit through which a cable (e.g. an optical fibre cable) may pass comprises a coupling body (11) having an open ended throughway (12) to receive an end of the conduit (31,32) for carrying a cable and a tube locking device (17) in the open end of the throughway for locking the conduit in the coupling body. The throughway has a reduced diameter section (25) part way along the throughway with an annular step (27) at an end of the section facing towards the open end of the throughway to receive the end of the conduit inserted into the throughway. An annular flexible sealing member (30) is disposed adjacent the step to be forced by an end of a tube inserted into the throughway into the reduced diameter section of the throughway. The resulting compression of the annular flexible seal forces the seal into sealing engagement with a cable extending along the throughway to provide a seal between the coupling body and cable.
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