Full Face Flange Gasket, Gasket Material Buna-N, Insert Material None, For Pipe Size 1 in, For Flange ANSI Class 150, Binder Material None, Color Black, Inside Diameter 1 5/16 in, Minimum Operating Temperature -30 Degrees F, Maximum Operating Temperature 250 Degrees F, Outside Diameter 4 1/4 in, Thickness 1/16 in, Number of Bolt Holes 4, Bolt Hole Diameter 5/8 in, Gasket Type Full-Face Gasket, Metal Detectable Gasket No, Included Fasteners Not Applicable, Hardness Shore 60A