Ring Flange Gasket Gasket Material Buna-N Insert Material None For Pipe Size 1 1/4 in For Flange ANSI Class 300 Binder Material None Color Black Inside Diameter 1 21/32 in Minimum Operating Temperature -30 Degrees F Maximum Operating Temperature 250 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 Shore 60A Includes Mounting Hardware No X-Ray Detectable No For Fluid Type Oil