Full Face Flange Gasket Gasket Material PTFE Insert Material None For Pipe Size 1/2 in For Flange ANSI Class 300 Binder Material None Color White Inside Diameter 7/8 in Minimum Operating Temperature -450 Degrees F Maximum Operating Temperature 500 Degrees F Outside Diameter 3 3/4 in Thickness 1/16 in Number of Bolt Holes 4 Bolt Hole Diameter 5/8 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated