| 摘要 |
<p>A tube coupling is disclosed which includes a tube, a body, a nut, a rear sleeve, and a front sleeve. The nut may be threadably advanced on the body from a starting position to a midway position and from the midway position to a tightened position. During movement of the nut from the starting position to the midway position only the front sleeve is radially inwardly contracted. During movement of the nut from the midway position to the tightened position, the front sleeve does not move and only the rear sleeve is radially inwardly contracted.</p> |
