Full Face Flange Gasket Gasket Material Graphite Insert Material None For Pipe Size 8 in For Flange ANSI Class 300 Binder Material None Color Gray Inside Diameter 8 5/8 in Minimum Operating Temperature -400 Degrees F Maximum Operating Temperature 975 Degrees F Outside Diameter 15 in Thickness 1/16 in Number of Bolt Holes 12 Bolt Hole Diameter 1 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated