Abstract: A dual seal assembly, in particular for sealing a gas compressor, includes a first mechanical seal assembly including a pair of co-operating seal rings, one of which is provided for common rotation with a rotating component and the other of which is provided rotationally fixed at a stationary component. A second mechanical seal assembly includes a pair of co-operating seal rings, one of which is provided for common rotation with a rotating component and the other of which is provided rotationally fixed at a stationary component. One of the seal rings is axially movable and axially biased with a biasing force against the respectively other seal ring to bias facing sliding surfaces of the seal ringss in a mutual sealing engagement. A secondary sealing assembly is provided for sealing the axially movable seal ring with respect to at least one circumferential guiding surface of a guiding component.

Abstract: The present invention discloses a dual seal assembly, in particular for sealing a gas compressor, comprising a first mechanical seal assembly (30) including a pair of co-operating seal rings (31, 32), one of which is provided for common rotation with a rotating component (60) and the other of which is provided rotationally fixed at a stationary component (1), a second mechanical seal assembly (40) including a pair of co-operating seal rings (4, 5), one of which is provided for common rotation with a rotating component (60) and the other of which is provided rotationally fixed at a stationary component (1), one of the seal rings being axially movable and axially biased with a biasing force against the respectively other seal ring, said biasing force being transmittable through a force transmitting ring (10) to the respective seal ring, in order to bias facing sliding surfaces (7, 8) of the seal rings, between which a sealing gap is formed during operation, in a mutual sealing engagement, and a secondary sealin