Flange Gasket, Ring, 1 in Pipe Size, 2 7/8 in Outside Dia., 1 5/16 in Inside Dia., Metal Detectable No, Material of Construction Neoprene, 1/8 in Thickness, -30 Degrees to 250 Degrees Temp. Range (F), Color Black, Standards ASME B16.21, ASTM D2000 BC 607