Countersunk Plug, 1/2 in Nominal Pipe Size, Cast Iron, Class Class 150, 300 psi @ 150 Degrees F Maximum Operating Pressure, 150 psi @ 350 Degrees F Max. Steam Pressure, -20 Degrees to 150 Degrees F, Plug Construction Solid, Plug Drive Style Countersink, Includes Pre-Applied Thread Sealant No, Includes Seal No, Black