| 摘要 |
A method and apparatus for coupling ends of tubes, particularly tubes of different outer diametral sizes. The coupling includes resiliently deformable portions for retaining and sealing the tube within the coupling in a generally leak-proof manner, and an insert is provided for reception within the end of each tube. The insert imparts a greater level of stiffness to the tube for improving the sealing of the tube within the coupling. The insert provides a tight friction-fit between the insert and tube and retards or restricts withdrawal of the insert and tube from the coupling.
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