Full Face Flange Gasket, Gasket Material Silicone, Insert Material None, For Pipe Size 4 in, For Flange ANSI Class 150, Binder Material None, Color Red, Inside Diameter 4 1/2 in, Minimum Operating Temperature -80 Degrees F, Maximum Operating Temperature 500 Degrees F, Outside Diameter 9 in, Thickness 1/16 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 Shore 60A