The disclosure relates to a mechanical seal for sealing at least one fluid-carrying channel and/or space extending in a stationary component and/or a rotating component from the environment,

having a seal ring which is supported in a sealing manner in the axial direction against a mating ring and, to compensate for wear on its end sealing surface or on a mating face, is supported against the mating ring elastically and movably in the axial direction with this sealing surface;
having a housing which movably accommodates the mechanical seal ring in the axial direction and encloses the mechanical seal ring with a circumferential part in the circumferential direction. The mechanical seal according to the disclosure, characterized in that the housing has a flange which adjoins the circumferential part in the axial direction and which is integrally formed with the circumferential part or is connected to the circumferential part by a material bond, wherein the flange forms at least one radially inwardly facing projection and the mechanical seal ring has a stop face opposite the radially inwardly facing projection in the axial direction, with which the mechanical seal ring strikes against the projection during a maximum permissible movement in the axial direction, and the flange forms at least one radially outwardly facing projection with which it can be connected or is connected non-rotatably to one of the two components holding the housing.