Full Face Flange Gasket Gasket Material Silicone Insert Material None For Pipe Size 2 1/2 in For Flange ANSI Class 150 Binder Material None Color Blue Inside Diameter 2 7/8 in Minimum Operating Temperature -50 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 7 in Thickness 1/8 in Number of Bolt Holes 4 Bolt Hole Diameter 3/4 in Product Type Full-Face Gasket Metal Detectable Gasket Yes Included Fasteners Not Applicable Hardness Not Rated