Specification Brand : Mr O-Ring BulletPoint1 : Contoured Backup Ring made of Viton (fluorocarbon elastomer) for use with a variety of chemicals and fuels BulletPoint2 : Durometer (hardness) of 90A BulletPoint3 : For use across a wide temperature range from -15 degrees F (-26 degrees C) to 450 degrees F (232 degrees C) BulletPoint4 : Backup Rings provide added extrusion resistance in high pressure sealing situations BulletPoint5 : 1 or 2 Backup Rings can be used per 1 O-ring, depending on the direction of pressure in the sealing application Color : Black CustomerPackageType : Frustration-Free Packaging ExternallyAssignedProductIdentifier : 7426824151361 ItemName : 349 Viton (FKM) Backup Ring, 90A Durometer, 4.528" ID, 0.183" Thick, Black ItemPackageDimensions_Height : 0.508 centimeters ItemPackageDimensions_Length : 17.018 centimeters ItemPackageDimensions_Width : 15.24 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : o-ring-seals Manufacturer : Mr O-Ring Material : Viton (FKM) ModelNumber : V8-90-349/1 NumberOfItems : 1 NumberOfPieces : 10 PartNumber : AZ-V8-90-349/1 ProductDescription : Used in common sealing applications, these nitrile/Buna N O-rings offer excellent resistance to tearing. They handle common motor and hydraulic oils with ease. 70A durometer. -40-225 degrees F. Meet SAE AS568, ASTM D1418, ASTM D2000, SAE J200. Performs well in: -Petroleum oils and fuels -Silicone oils and greases -Ethylene glycol -Dilute acids -Water Size : 349 Style : Pack of 1 SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31410000