| 摘要 |
A connector tubing 10 comprises a pair of spiral flex tubes 12, 14 which are axially overlapped in nested relation, and twistable relative to each other about an axis to provide torsion relief Preferably one tube is provided with an arcuately elongated slot 36, and the other has a boss 42 extending radially into the slot, to allow for the relative twisting of the tubes. Preferably each tube is corrugated between peaks and troughs 32, 34 which flushly abut one another in the axially overlapped portion so that there is no radial gap between them.
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