| 摘要 |
<p>A pipe coupling device includes a body adapted for insertion into a pipe, the body having a through passage, and on its outer surface a groove for receiving a sealing means for forming a fluid-tight seal between the pipe and the body, the sealing means having a retaining portion and a sealing portion, wherein either the groove, the sealing means or both are constructed and arranged such that the retaining portion holds the sealing means within the groove when the sealing portion is subjected to the insertion force experienced when the pipe coupling device is inserted into a pipe. Further, the base portion may be axially wider than the sealing portion. Further, the sealing means may include reinforcing means adapted to prevent the sealing means leaving the groove.</p> |
