Flange Gasket, Full Face, 2 1/2 in Pipe Size, 7 in Outside Dia., Bolt Holes 4, 2 7/8 in Inside Dia., Metal Detectable No, Material of Construction Aramid Fiber with SBR Binder, 1/64 in Thickness, -100 Degrees to 400 Degrees Temp. Range (F), Color White, Standards ASME B16.21