| 摘要 |
One pipe has an integrated seal in its front side, embedded in the concrete. An integrated seal (2,6) is also embedded in the concrete of the other pipe front side. Pref. one integrated seal (2) comprises a protrusion (4), fitting into an aperture (7) of the other integrated seal (6). Both integrated seals may have apertures for a sealing strip formed as a separate component. The protrusion, or strip, intended to penetrate a sealing aperture, may be of harder material than the integrated seal, forming the aperture.
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