| 摘要 |
<p>There is a ring for connecting a stormwater or sewer pipe into an aperture. The ring has inner and outer facing surfaces (2, 3A) which in the undeformed configuration of the ring are adapted to fit respectively over the outer circumference of said pipe and into the aperture. The ring further two axially spaced annular plates (4, 7) with threaded rods (5) extending between them. The rods (5) are fitted with nuts (6). Turning down the nuts (6) axially deformes an internal portion (8) of the ring located between the inner and outer facing surfaces (2, 3A) so that the surfaces are displaced radially to seal against the pipe and aperture.</p> |
