Full Face Flange Gasket Gasket Material Aramid Insert Material None For Pipe Size 3 1/2 in For Flange ANSI Class 300 Binder Material Buna-N Color Blue Inside Diameter 4 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 9 in Thickness 1/32 in Number of Bolt Holes 8 Bolt Hole Diameter 7/8 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Included Fasteners Not Applicable Hardness Not Rated