Specification Brand : Flyshop BulletPoint1 : OD x ID x Width: 50 x 40 x 5 mm / 1.97 x 1.57 x 0.2 inch; BulletPoint2 : Durometer (hardness) of 70 for resistance to penetration; BulletPoint3 : Temperature range from -68 degrees F(-20 degrees C)to 248 degrees F(120 degrees C); BulletPoint4 : Material: Nitrile Rubber (NBR); BulletPoint5 : Package Content : 10 x O-Ring. Color : Black GpsrSafetyAttestation : 1 ItemName : Flyshop 10 Pcs Black Buna Nitrile Rubber O Ring Gasket (Round Band) 1.97" OD 1.57" ID 0.2" Width, 50 x 40 x 5mm ItemPackageDimensions_Height : 6.9 centimeters ItemPackageDimensions_Length : 3.4 centimeters ItemPackageDimensions_Width : 6.3 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : o-ring-seals Manufacturer : Flyshop Material : Rubber ModelNumber : O-Ring-50*40*5 NumberOfItems : 10 NumberOfPieces : 10 PartNumber : O-Ring-50*40*5 ProductDescription : This O-ring is made of black Nitrile Rubber, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications,can be used across a wide temperature range from -68 degrees F (-20 degrees C) to 248 degrees F (120 degrees C).O-rings are available in various sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter. SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 10 UnspscCode : 39121400