| 摘要 |
<p>A packing plug including an elongate, externally threaded, hollow rod and at least one plug assembly including a first collar located about the rod and fixed relative thereto, a deformable sleeve located about the rod against the first collar and a second collar mounted about the rod adjacent the deformable sleeve such that movement of the second collar relative to the rod in a first direction moves the second collar closer to the first collar deforming the deformable sleeve therebetween causing radial enlargement of the deformable sleeve.</p> |
