Specification Brand : Lamons BulletPoint1 : You will get maximum performance from our gasket materials when you use our gasket installation procedure. [1] clean and inspect the flanges, surface or parts that require gasket BulletPoint2 : Clean or replace your bolts, nuts & washers. Lubricate the bolt's, thread, nuts, washers and the underside of the head with graphite based compound BulletPoint3 : Flat washers are recommended to assure even distribution of the bolting force. Ensure lubricant doesn’t contaminate gasket. Carefully insert the gasket between the mating surfaces BulletPoint4 : The use of a torque wrench is highly recommended. This assures a longer life and leak free performance. Whether an automotive head gasket or a flange gasket, it should be torqued BulletPoint5 : Make four even increment passes in a 12-6-3-9 o'clock pattern sequence. The appropriate stress on the gasket material you use is key to its success which varies depending material chosen Color : Red ItemName : Sterling Seal CRG7237.1500.125.150X20 7237 Red Rubber Ring Gasket, 1.91" ID, 1-1/2" Pipe Size, 1/8" Thick, Pressure Class 150# (Pack of 20) ItemPackageDimensions_Height : 6 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 6 inches ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : sheet-gaskets Manufacturer : Lamons Material1 : Rubber Material2 : copolymer of styrene and butadiene ModelNumber : CRG7237.1500.125.150X20 NumberOfItems : 20 PartNumber : CRG7237.1500.125.150X20 Size : 1.50 UnitCount : 20 UnspscCode : 31410000