Specification Brand : XIKE BulletPoint1 : ✔SIZE-Metric 12mm Inner Diameter, 21mm Outside Diameter, 4mm Width. BulletPoint2 : ✔Material-Made from Nitrile rubber standardized to 70A NBR with a temperature range of -4°F (-20°C) to 212°F (106°C). BulletPoint3 : ✔Advantage-Grease is included for easy installation, reducing friction and extending operating life. BulletPoint4 : ✔Performance-It can be used to protect shafts and bearings from dirt and foreign matter and grease seepage, and has good resistance to a variety of mineral oils,petroleum oils, hydraulic oils and lubricating greases. BulletPoint5 : ✔Warranty - Six months warranty, free refund if there is any quality problem during the warranty period. ExternallyAssignedProductIdentifier : 7423722778720 ExternallyAssignedProductIdentifier1 : 0050811640988 ExternallyAssignedProductIdentifier2 : 050811640988 ItemName : XiKe Oil Shaft Seal, Lip Seals, TC 12x21x4mm Nitrile Rubber Cover Double Lip with Spring, Oil Seals for Bearing Shafts,Rotating Shafts,etc., Black Pack of 2 ItemPackageDimensions_Height : 4 millimeters ItemPackageDimensions_Length : 21 millimeters ItemPackageDimensions_Width : 21 millimeters ItemTypeKeyword : lip-seals Manufacturer : XiKe Material : Synthetic Rubber Material1 : Synthetic Rubber Material2 : Alloy Steel PartNumber : TC12x21x4mmx2 ProductDescription : Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease. Size : TC12x21x4mm SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31410000