This shaft seal provides a radial rotating contact between a shaft and a housing bore, closing off the gap to keep lubricant in and contamination out. The bore diameter is 25.0 mm, the outside diameter is 35.0 mm, and the net mass is 3.25 g. The compact cross-section suits installation in confined housing spaces without altering the surrounding bearing arrangement. Fitted onto a rotating shaft, it maintains a sealing lip contact that seals against oil or grease loss while preventing dirt, dust and moisture ingress. The dimensional match between bore and shaft diameters allows a tight press fit in the housing bore, and the small mass reflects the slim sealing profile typical of this seal type.