Product DescriptionStandard PartsProduct Name:Skeleton oil sealType: TC Material: Nitrile Butadiene Rubber (NBR)+ Metal frame + SpringColour: BlackWorking pressure: 0.3barWorking Temperature: -20 to +100℃Material hardness: 70 degreesMedium: Mineral oil, Synthetic oil, WaterDimensions: inside diameter * outer diameter * height, unit: mm (mm)Inner diameter:200mm - 400mmOuter diameter: 230mm-440mmHeight: 15mm-20mmFunction and application: Prevent the intrusion of sand, dust, moisture, etc. Into the bearing from outside, and restrict the leakage of lubricating oil in the bearing. Widely used in mechanical device device spindles, crankshafts of automobiles,motorcycles, camshafts, differentials, shock absorbers, engines, axles, entrance and rear wheels, etc.According in your choice!