Specification Brand : Othmro BulletPoint1 : [Size] - 80mm Outside Diameter, 68.6mm Inner Diameter, 5.7mm Cross-Section Diameter BulletPoint10 : ??Function??O-ring toric joint gaskets seal and prevent water leaks in faucets, sinks, filters, toilets, plumbing and hinery.HNBR can be formulated to meet application temperatures ranging between -45 degrees C and 165 degrees C, and HNBR is classified by ASTM as DH-type polymer. BulletPoint2 : [Hardness] - 70A Durometer (Shore Hardness) for resistance to penetration BulletPoint3 : [Buna-N] - Standard Nitrile Butadiene Rubber with a wide temperature range from -4℉ (-20°C) to 212℉ (100°C) BulletPoint4 : [Application] - Widely used for pressure washer, filter, pump, water hose, plumbing pipe, garage maintenance, automobile mechanical and much more BulletPoint5 : [NOTE] - Please confirm the required size and material before purchase, and put it in the right place BulletPoint6 : ??18 Different Sizes??There are 18 most popular used sizes, applicable for many scenes, very convenient to use. BulletPoint7 : ??18 Different Sizes??There are 18 most popular used sizes, applicable for many scenes, very convenient to use. BulletPoint8 : ??Plastic Case??The rings comes with a releasable plastic case which is with a sturdy housing, easy for storage.Hydrogenated Nitrile Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR) and is for mission critical applications. BulletPoint9 : ??Great Comprehensive performance??The rings are made of Hydrogenated nitrile rubber which has good oil , good heat , excellent chemical , excellent and high compression set . Color : popular ExternallyAssignedProductIdentifier : 6111622369278 ExternallyAssignedProductIdentifier1 : 719233274941 ExternallyAssignedProductIdentifier2 : 0719233274941 GpsrSafetyAttestation : 1 ItemName : Othmro 5pcs Nitrile Rubber O-Rings, 5.7mm Wire Dia 80mm OD Metric Sealing Nitrile NBR Rubber Washers for Oil or Air Sealing, Professional Plumbing, Car Repair, Air or Gas Connections Black ItemPackageDimensions_Height : 13.5 centimeters ItemPackageDimensions_Length : 1.9 centimeters ItemPackageDimensions_Width : 9.5 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : o-ring-seals Manufacturer : Othmro Material : Silicone Material1 : Rubber Material2 : Rubber Material3 : Rubber Material4 : Rubber Material5 : Rubber ModelNumber : 731-08753B NumberOfItems : 10 NumberOfPieces : 5 PartNumber : OTH190818Y-0696 ProductDescription : Specification:Material: Rubber Housing color: Green Size types: 18 sizes (as picture show) Box size (L*W*H): 23x10x3cm/9.04x3.93x1.18(approx) Quantity: 1 set (270 pcs) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you.