Full Face Flange Gasket Gasket Material Aramid Insert Material None For Pipe Size 12 in For Flange ANSI Class 300 Binder Material Buna-N Color Blue Inside Diameter 12 3/4 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 20 1/2 in Thickness 1/32 in Number of Bolt Holes 16 Bolt Hole Diameter 1 1/4 in Product Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated