Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) with a sliding surface (3a) and a stationary slide ring (4) with a sliding surface (4a) defining a sealing gap (5) therebetween, wherein one of the slide rings is designed as a wearing slide ring and has a hardness lower than the other one of the slide rings, wherein the wearing slide ring has a base area (30a) and a wear area (30b), and wherein the wear area (30b) has an at least partially non-cylindrical area in the axial direction (A) of the mechanical seal assembly.

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) with a sliding surface (3a) and a stationary slide ring (4) with a sliding surface (4a) defining a sealing gap (5) therebetween, wherein one of the slide rings is designed as a wearing slide ring and has a hardness lower than the other one of the slide rings, wherein the wearing slide ring has a base area (30a) and a wear area (30b), and wherein the wear area (30b) has an at least partially non-cylindrical area in the axial direction (A) of the mechanical seal assembly.

Abstract: The invention relates to a pump assembly, especially of a mechanical seal assembly, for supplying a fluid, especially to a mechanical seal (2a, 2b), comprising exactly one drive (11) comprising a drive shaft (24), a first axial pump (21), which conveys the fluid in the axial direction (X-X) of the drive shaft, a second axial pump (22), which conveys the fluid in the axial direction of the drive shaft, and a radial pump (23), which conveys the fluid in the radial direction (R) of the drive shaft, wherein the first axial pump (21) and the second axial pump (22) are arranged in front of the radial pump (23) in the flow-through direction (B) of the fluid across the pump assembly, and wherein the drive (11) simultaneously drives the first axial pump (21), the second axial pump (22) and the radial pump (23).

Abstract: The invention relates to a pump assembly, especially of a mechanical seal assembly, for supplying a fluid, especially to a mechanical seal (2a, 2b), comprising exactly one drive (11) comprising a drive shaft (24), a first axial pump (21), which conveys the fluid in the axial direction (X-X) of the drive shaft, a second axial pump (22), which conveys the fluid in the axial direction of the drive shaft, and a radial pump (23), which conveys the fluid in the radial direction (R) of the drive shaft, wherein the first axial pump (21) and the second axial pump (22) are arranged in front of the radial pump (23) in the flow-through direction (B) of the fluid across the pump assembly, and wherein the drive (11) simultaneously drives the first axial pump (21), the second axial pump (22) and the radial pump (23).