Full Face Flange Gasket Gasket Material Graphite Insert Material 316 Stainless Steel For Pipe Size 2 1/2 in For Flange ANSI Class 300 Binder Material None Color Gray Inside Diameter 2 7/8 in Minimum Operating Temperature -400 Degrees F Maximum Operating Temperature 975 Degrees F Outside Diameter 7 1/2 in Thickness 1/16 in Number of Bolt Holes 8 Bolt Hole Diameter 7/8 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated