Ring Flange Gasket Gasket Material Aramid Insert Material None For Pipe Size 2 1/2 in For Flange ANSI Class 150 Binder Material Buna-N Color Blue Inside Diameter 2 3/16 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 750 Degrees F Outside Diameter 4 7/8 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