| 摘要 |
A seal bellows (7) composed of elastomeric material, for example polytetrafluoroethylene, as a secondary seal for the axially movable slip ring (6) of a rotating mechanical seal, the folds (14A, 15A) of which bellows alternately have a greater and smaller wall thickness, thereby reducing the effect on the axial force, due to the spring action of the folds (14A, 15A), with which the slip ring (6) rests against the counter ring (4). <IMAGE>
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