Specification Brand : Mr O-Ring BulletPoint1 : Made of ethylene propylene diene monomer (EPDM) rubber for use with a variety of chemicals and environments BulletPoint2 : Can be used in a wide temperature range from -70 degrees F (-57 degrees C) to 300 degrees F (149 degrees C) BulletPoint3 : Round in cross-section to provide a seal between cylindrical overlapping surfaces BulletPoint4 : Durometer (hardness) of 70A for resistance to penetration BulletPoint5 : Meets standards defined by Aerospace Standard AS568A Color : Black Configuration : Universal ConnectorType : Nipple ExteriorFinish : Brass ExternallyAssignedProductIdentifier1 : 605322581864 ExternallyAssignedProductIdentifier2 : 0605322581864 ExternallyAssignedProductIdentifier3 : 00605322581864 FitType : Universal Fit IncludedComponents : Grease Nipple ItemName : 228 EPDM O-Ring, 70A Durometer, Black, 2-1/4" ID, 2-1/2" OD, 1/8" Width (Pack of 25) ItemPackageDimensions_Height : 11.5 centimeters ItemPackageDimensions_Length : 2.4 centimeters ItemPackageDimensions_Width : 9.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : o-ring-seals Manufacturer : Small Parts Material : EPDM ModelNumber : 228 NumberOfItems : 25 NumberOfPieces : 6 PartNumber : ORP-228-25 ProductDescription : Circular Cross-Section They are circular in shape, round in cross-section. Designed for use in a wide variety of sealing applications. Commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders.