| 摘要 |
A plastic closure cover especially for the sealing of an opening in a panel comprises a bottom part 2, against which adjoins a sealing lip 3 for lying against the upper side of the panel. A sealing catch ring 10 is positioned opposite the sealing lip 3 for lying against the under side of the panel. According to the invention, the catch ring 10 has two sealing surfaces, each of which lie tightly against the opposite surfaces of the panel in the area about the opening.
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