Ring Flange Gasket Gasket Material Aramid Insert Material None For Pipe Size 3 in For Flange ANSI Class 150 Binder Material Buna-N Color Blue Inside Diameter 3 3/8 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 750 Degrees F Outside Diameter 5 3/8 in Thickness 1/16 in Gasket Type Ring Gasket Metal Detectable Gasket No Included Fasteners Grade A Zinc Plated Carbon Steel Bolt Hardness Not Rated Includes Mounting Hardware Yes X-Ray Detectable No