Floating oil sealing rings were developed for use in RENK slide bearings. These two-piece sealing rings are freely movable in a seal carrier or directly in the bearing housing. Both halves are held together by a garter spring. The ends form a lock and are twisted together. The oil sealing ring is one of the range of floating seals, i.e. in the case of horizontal machines it is held on the shaft by its own weight. Radial clearance between the sealing ring and the seal carrier or the housing can be 1...6 mm, depending on size and application. This prevents damage to the oil sealing ring by the shaft due to finishing inaccuracies or during assembly (e.g. during shaft alignment). Floating oil sealing rings are manufactured in a range from 100 to 1000 mm. The diameters are graded as per standard scale R 20 within a range of 100 to 315 mm, and as per scale R 40 for larger sizes up to 1000 mm. The corresponding shaft diameters should be considered for a e8 tolerance. The split design, the excellent temperature, radiation and chemical resistance, together with high dimensional stability under heat, permit application of the oil sealing rings not only in slide bearings but also in other locations on electric machines, fans or compressors. These seals are made from a high temperature resistant synthetic (RENK plastic therm P 50) for the diameter range of 100 to 335 mm, whilst for the larger diameters up to 1000 mm an epoxy fabric base laminate is used. Both materials are electrically insulating.