Sealing ring, seal and seal arrangement for a radial shaft

A radial shaft sealing ring configured for sealing a sealing gap between a shaft and a machine part surrounding the shaft, comprising a retaining portion and a sealing lip which extends away from the retaining portion in a direction axial to the central axis of the radial shaft sealing ring as far as its free edge, wherein the sealing lip comprises:

• a sealing side comprising a sealing edge configured for bearing in a dynamically sealing manner against the sealing surface of the shaft or of the machine part;
• and
• a rear side pointing away from the sealing edge in the radial direction, which has a radially outwards open retaining groove for receiving an elastically deformable preloading element, by means of which the sealing edge, in operational use of the radial shaft sealing ring, can be preloaded in a radial direction against the sealing surface of the shaft,
• wherein:
• (a) the groove bottom of the retaining groove has radial depressions which are spaced apart from one another in the circumferential direction of the radial shaft sealing ring, wherein each depression has a radial depth which is 10 to 40% of the nominal thickness of the sealing lip, measured between sealing edge and groove bottom, of the retaining groove,
• and/or
• (b) the sealing lip has a plurality of edge cutouts, wherein the plurality of edge cutouts are spaced apart from one another in the circumferential direction of the radial shaft sealing ring, wherein each edge cutout makes contact with the sealing edge or is spaced apart from the sealing edge and extends in a radial direction from the sealing side as far as the retaining groove.