Full Face Flange Gasket Gasket Material Silicone Insert Material None For Pipe Size 4 in For Flange ANSI Class 150 Binder Material None Color Blue Inside Diameter 4 1/2 in Minimum Operating Temperature -50 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 9 in Thickness 1/16 in Number of Bolt Holes 8 Bolt Hole Diameter 3/4 in Product Type Full-Face Gasket Metal Detectable Gasket Yes Included Fasteners Not Applicable Hardness Not Rated