Axial shaft seal ring, having a holding portion which can be arranged in a statically sealing manner on a shaft which can be rotated about an axis of rotation, and having a sealing portion for dynamically sealing abutment against a sealing surface in an axial direction to the central axis of the axial shaft seal ring, the holding portion and the sealing portion being connected to one another via an elastically deformable sealing membrane which extends from the holding portion in a radial direction towards the sealing portion and by means of which the sealing portion can be pretensioned against the sealing surface with a pressure force F A, the sealing membrane having a plurality of spatial structure regions R in the circumferential direction of the shaft seal ring, which regions serve as a circumferential reserve of the sealing membrane, an expansion of the sealing membrane in a radial direction being effected in the spatial structure regions R by a centrifugal force F R, which is accompanied by a rotational movement of the shaft seal ring about the central axis thereof and acts on the sealing membrane, in such a manner that the sealing portion is acted upon with an axially directed pull force F Z by the sealing membrane, which pull force is directed opposite to the pressure force F A, characterized in that the sealing portion is dimensionally stable or stabilized in the shape thereof in comparison with the sealing membrane with respect to the centrifugal forces F R occurring during the operational use of the axial shaft seal ring, the sealing portion of the axial shaft seal ring being stiffened by a support ring in order to counteract a radial expansion of the sealing portion during a rotational movement of the axial shaft seal ring about the central axis thereof. having a holding portion which can be arranged in a statically sealing manner on a shaft which can be rotated about an axis of rotation, and having a sealing portion for dynamically sealing abutment against a sealing surface in an axial direction to the central axis of the axial shaft seal ring, the holding portion and the sealing portion being connected to one another via an elastically deformable sealing membrane which extends from the holding portion in a radial direction towards the sealing portion and by means of which the sealing portion can be pretensioned against the sealing surface with a pressure force F A, the sealing membrane having a plurality of spatial structure regions R in the circumferential direction of the shaft seal ring, which regions serve as a circumferential reserve of the sealing membrane, an expansion of the sealing membrane in a radial direction being effected in the spatial structure regions R by a centrifugal force F R, which is accompanied by a rotational movement of the shaft seal ring about the central axis thereof and acts on the sealing membrane, in such a manner that the sealing portion is acted upon with an axially directed pull force F Z by the sealing membrane, which pull force is directed opposite to the pressure force F A, characterized in that the sealing portion is dimensionally stable or stabilized in the shape thereof in comparison with the sealing membrane with respect to the centrifugal forces F R occurring during the operational use of the axial shaft seal ring, the sealing portion of the axial shaft seal ring being stiffened by a support ring in order to counteract a radial expansion of the sealing portion during a rotational movement of the axial shaft seal ring about the central axis thereof.