[Metric Size] - 35mm Outside Diameter, 20mm Inner Diameter, 7mm Width [Nitrile Rubber] - Standard 70A NBR with a temperature range from -4 (-20°C) to 212 (100°C) [Advantage] - Good resistance to many petroleum oils, greases, hydraulic fluids, mineral oil, and grease [Application] - Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease [NOTE] - Please confirm the required size and material before purchase, and put it in the right place