Specification Brand : Geife BulletPoint1 : FKM material provides high acid resistance. BulletPoint2 : Working temperature range (-20°F - 400°F). BulletPoint3 : For 18 inch or say 450mm welding neck tank manway cover. 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 : Black ExternallyAssignedProductIdentifier : 3643726278451 ExternallyAssignedProductIdentifier1 : 0077348973235 ExternallyAssignedProductIdentifier2 : 077348973235 ItemDisplayDimensions_Length : 1 inches ItemName : Geife 18 inch (450mm) FKM Material Replace Gasket Sealing for Non-Pressure Round Manhole Cover ItemPackageDimensions_Height : 0.5 inches ItemPackageDimensions_Length : 10 inches ItemPackageDimensions_Width : 13.25 inches ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : sheet-gaskets LowerTemperatureRating : -20 degrees_fahrenheit Manufacturer : Geife Material : FKM Material1 : Vegetable Fiber Material2 : Detroiter Gasket Material Material3 : Fish Paper Material4 : Oil Gasket Paper Material5 : Vellumoid Fiber ModelNumber : CFF7540.5IN.125.150X5 NumberOfItems : 1 PartNumber : GF001 ProductDescription : This is gasket is for sanitary round non-pressure tank manhole cover . ProductSiteLaunchDate : 2021-11-16T02:32:09.522Z Size : 5 StreetDate : 2017-05-21T00:00:01Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 5 UnspscCode : 31400000 UpperTemperatureRating : 250 degrees_fahrenheit