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. <EOS>