| 摘要 |
<p>Sealing device for the sealing occlusion of an opening in a wall, which device is made of a resilient material and provided with at least one, substantially cylindrical, continuous duct. The outer surface of the device is covered with circumferential, substantially inflexible ridges aligned in (imaginary) radial sections, whose outside diameter is greater than the inside diameter of the hole to be sealed. The inner wall of the minimally one duct is smooth-walled, and the minimally one duct is intended for the accommodation of a lead-through bushing.</p> |
