| 摘要 |
<p>An apparatus for sealably and flexibly joining together a pipe member (12) and an enclosed body (11) in a sewer system having a seal (13) comprising an elastic sleeve (16) with an annular cavity (22). The cavity (22) contains a coagulant material (25) that forms a cellular, viscous gel when activated with water. When the seal (13) is properly positioned, water is pumped under pressure through a valve (27) into the cavity (22) to expand the elastic sleeve (16) into sealing engagement with the pipe (12) and the manhole (11). In time the water and coagulant material forms the gel that remains in the viscous state.</p> |
