Importance

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Abstract

The present disclosure relates to a hard sealing ring with an annular body which has a rotationally symmetrical basic shape with respect to an axis. The annular body has, in a cross section which lies in the direction of the axis, a contact portion which is arranged on an end face of the annular body. The contact portion points outwards in the direction of the axis. Furthermore, the annular body has a trough portion in the cross section, which is arranged on a radial lateral surface of the annular body and faces away from the contact portion with respect to the direction of the axis. The annular body has an anti-friction coating on the contact portion, which is in particular formed in one or more layers. The disclosure further relates to an anti-friction hard sealing device comprising a first hard sealing ring and a second hard sealing ring, each having a contact portion, the hard sealing rings being arranged adjacent to and coaxial with each other along the axis in the intended mounting position, so that the contact portions contact each other circumferentially.

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First Claim