Full Face Flange Gasket Gasket Material Buna-N Insert Material None For Pipe Size 1 1/2 in For Flange ANSI Class 150 Binder Material None Color Black Inside Diameter 1 15/16 in Minimum Operating Temperature -30 Degrees F Maximum Operating Temperature 250 Degrees F Outside Diameter 5 in Thickness 1/8 in Number of Bolt Holes 4 Bolt Hole Diameter 5/8 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Shore 60A