Specification Brand : Small Parts BulletPoint1 : Made of neoprene (polychloroprene) for use with a variety of fluids and gases from ammonia to Freon BulletPoint2 : Durometer (hardness) of 70A for resistance to penetration BulletPoint3 : Round cross-section to provide a seal between cylindrical overlapping surfaces BulletPoint4 : For use across a wide temperature range from -65 degrees F/-54 degrees C to 275 degrees F/135 degrees C BulletPoint5 : Meets standards defined by Aerospace Standard AS568A Color : Black ItemName : 137 Neoprene O-Ring, 70A Durometer, Round, Black, 2-1/16" ID, 2-1/4" OD, 3/32" Width (Pack of 40) ItemPackageDimensions_Height : 4.064 centimeters ItemPackageDimensions_Length : 12.446 centimeters ItemPackageDimensions_Width : 9.398 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : o-ring-seals Manufacturer : Sterling Seal Material : Neoprene ModelNumber : 137 NumberOfItems : 40 PartNumber : 137-5927-40 Size : 137 UnitCount : 40 UnspscCode : 31410000