Full Face Flange Gasket, Gasket Material Aramid, Insert Material None, For Pipe Size 3 1/2 in, For Flange ANSI Class 150, Binder Material Buna-N, Color Green, Inside Diameter 4 in, Minimum Operating Temperature -100 Degrees F, Maximum Operating Temperature 400 Degrees F, Outside Diameter 8 1/2 in, Thickness 1/8 in, Number of Bolt Holes 8, Bolt Hole Diameter 3/4 in, Gasket Type Full-Face Gasket, Metal Detectable Gasket No, Included Fasteners Not Applicable, Hardness Not Rated