Flange Gasket, Full Face, 3 in Pipe Size, 8 1/4 in Outside Dia., Bolt Holes 8, 3 1/2 in Inside Dia., Metal Detectable No, Material of Construction Aramid Fiber with SBR Binder, 1/16 in Thickness, -100 Degrees to 400 Degrees Temp. Range (F), Color White, Standards ASME B16.21