Full Face Flange Gasket Gasket Material SBR Insert Material None For Pipe Size 1/2 in For Flange ANSI Class 300 Binder Material None Color Red Inside Diameter 7/8 in Minimum Operating Temperature -45 Degrees F Maximum Operating Temperature 200 Degrees F Outside Diameter 3 3/4 in Thickness 1/8 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 Shore 60A