Mechanical seal arrangement for high temperature applications

The invention relates to a slide ring seal assembly (1), comprising a slide ring seal (2) with a rotating slide ring (3) with a first sliding surface (3a) and a stationary slide ring (4) with a second sliding surface (4a), further comprising a prestressing device (6) for prestressing one of the two slide rings in the axial direction (X-X), further comprising an auxiliary sealing element (7) which is arranged on a rear side (40) of the axially prestressed slide ring, wherein the prestressing device (6) prestresses the axially prestressed slide ring via the auxiliary sealing element (7), and further comprising a sleeve (8) which is arranged radially inside the auxiliary sealing element (7), wherein the auxiliary sealing element (7) is arranged on the rear side (40) of the axially prestressed slide ring, wherein the auxiliary sealing element (7) has a sealing edge (70) which is closed annularly in the circumferential direction and which projects in the axial direction (X-X) from the auxiliary sealing element (7) to the axially prestressed slide ring, wherein the sealing edge (70) seals on the rear side (40) of the axially prestressed slide ring, and wherein, furthermore, the auxiliary sliding element (7) seals by way of an inner circumferential surface (73) on the outer circumference of the sleeve (8).