| 摘要 |
Between the elastic edge zone (4) of the through passage aperture (3) for the conduit section to be sealed and the sealing plane (2) is a conical intermediate zone (10) of flexible surface material, which is formed as a smooth blunt conical cover. The base of the blunt cone is located in the plane of the sealing plane. The ratio of the height (H10) to the diameter (G10) of the base surface of the blunt cone, the cover of which forms the surface of the conical intermediate zone, amounts to 0.5 is less than than or equal to (H10/G10) is less than or equal to 3 The opening angle (alpha) of the cone, the blunt conical cover of which describes the surface of the conical intermediate zone amounts to 20 degrees is less than or equal to alpha is greater than or equal to 60 degrees, preferably alpha = 30 degrees.
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