Ring Flange Gasket Gasket Material Inorganic Fiber Insert Material None For Pipe Size 1 in For Flange ANSI Class 150 Binder Material Buna-N Color Gray Inside Diameter 1 5/16 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 800 Degrees F Outside Diameter 2 5/8 in Thickness 1/16 in Gasket Type Ring Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated Includes Mounting Hardware No X-Ray Detectable No