Ring Flange Gasket Gasket Material PTFE Insert Material None For Pipe Size 1 1/4 in For Flange ANSI Class 300 Binder Material None Color White Inside Diameter 1 21/32 in Minimum Operating Temperature -450 Degrees F Maximum Operating Temperature 500 Degrees F Outside Diameter 3 1/4 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