Kaco Gmbh+co.

Klaus-J/u/ Rgen Uhrner

A slide ring seal intended for the sealing of a rotating machine component. The seal comprises an annular housing in which are accommodated a slide ring, a bellows-like secondary seal, and a counter ring which is arranged with force fit on the rotating machine component. The secondary seal bears via a spring axially on the slide ring. The counter ring, and hence the slide ring bearing thereon, are limited by stops in the axial direction in the housing. The counter ring bears directly on the rotating machine component, so that an additional holding member for accommodating the counter ring is not necessary. This permits a very considerable reduction in the plane running deviation of the counter ring slide face with respect to the rotatable machine component, which is extremely important to a satisfactory function of the slide ring seal. By eliminating the holding member, and by means of a static seal between holding member and counter ring, considerable production and assembly costs can be saved.

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Leingarten, Germany

Klaus-J/u/ Rgen Uhrner