Ring Flange Gasket Gasket Material Aramid Insert Material None For Pipe Size 18 in For Flange ANSI Class 150 Binder Material SBR Color White Inside Diameter 18 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 21 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 For Fluid Type Not Applicable