Full Face Flange Gasket Gasket Material Silicone Insert Material None For Pipe Size 3 in For Flange ANSI Class 150 Binder Material Silicone Color Red Inside Diameter 3 1/2 in Minimum Operating Temperature -80 Degrees F Maximum Operating Temperature 450 Degrees F Outside Diameter 7 1/2 in Thickness 1/8 in Number of Bolt Holes 4 Bolt Hole Diameter 3/4 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Shore 60A