A seal of an exterior rear view mirror assembly relative to a body part of a motor vehicle is described, which is formed as one piece, and comprises a sealing pad and a sealing grommet integrally molded on the sealing pad. The sealing pad covers at least one section of the surface of a minor base of the exterior rear view minor assembly lying on the bodywork side. The sealing grommet serves for sealing at least one feed-through opening, which is provided on the bodywork side for feed-through of the cable harness of the exterior rear view minor assembly. The sealing grommet is formed as an open hollow body on the free end, which is turned away from the sealing pad. A passage opening is provided for the cable harness at the intersection of the symmetry axis of the hollow body with the sealing pad.