Wheel Bearing - Rear/Middle - PolarisCaracteristicas: Bearing seals are double lipped rubber that provides superior exclusion of water, dirt and sand with improved grease retention Steel garter spring guarantees constant pressure on the axle shaft, extending the life of the seal Wheel seals are type TC nitrile elastomer, specifically designed to keep out water, dirt and sand Seals have a rubber coated outside diameter that creates an optimum seal at the hub High speed, low drag bearings