Full Face Flange Gasket Gasket Material Aramid Insert Material Not Applicable For Pipe Size 3/4 in For Flange ANSI Class 150 Binder Material Buna-N Color Blue Inside Diameter 1 1/16 in Minimum Operating Temperature -100 Degrees F Maximum Operating Temperature 400 Degrees F Outside Diameter 3 7/8 in Thickness 1/64 in Number of Bolt Holes 4 Bolt Hole Diameter 5/8 in Gasket Type Full-Face Gasket Metal Detectable Gasket No Hardness Not Rated Includes Mounting Hardware No