Full Face Flange Gasket Gasket Material Buna-N Insert Material None For Pipe Size 3/4 in For Flange ANSI Class 150 Binder Material Buna-N Color White Inside Diameter 1 1/16 in Minimum Operating Temperature -25 Degrees F Maximum Operating Temperature 170 Degrees F Outside Diameter 3 7/8 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