Ring Flange Gasket Gasket Material Graphite Insert Material None For Pipe Size 1 1/4 in For Flange ANSI Class 150 Binder Material None Color Gray Inside Diameter 1 21/32 in Minimum Operating Temperature -400 Degrees F Maximum Operating Temperature 975 Degrees F Outside Diameter 3 in Thickness 1/8 in Gasket Type Ring Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated Includes Mounting Hardware No X-Ray Detectable No