| 摘要 |
<p>A tube plug (14) comprises a one piece cylindrical shell (16) having an open end (20) and a closed end (18) which is capable of being inserted in a heat exchange tube and internally expanded into contact with the inside surface of the heat exchange tube for preventing flow of a coolant through the heat exchange tube. The tube plug (14) comprises a circumferential groove (24) which has an elastomeric material disposed therein for enhancing the seal between the tube plug (14) and the tube.</p> |
