| 摘要 |
A face seal assembly (10) having an intermediate seal ring (38) is disclosed. The intermediate seal ring (38) is disposed between a pair of opposing metal seal faces (36,37) of the seal assembly (10) so that the faces (36,37) contact opposite sealing faces (39,40) on the ring (38), instead of each other. Means (44) are provided for rotating the intermediate seal ring (38) at a speed which is proportionately less than the rotational speed between the opposing seal faces (36,37). This rotation of the intermediate ring (38) reduces the velocities of the contacting seal faces. The face seal assembly (10) is thus capable of use in higher speed applications without incurring scoring of the seal faces.
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