Round Cap, 3/8 in Nominal Pipe Size, Forged Steel, Black, Class Class 3000, Female Socket, 2,000 psi @ 150 Degrees F Maximum Operating Pressure, 300 psi @ 550 Degrees F Max. Steam Pressure, -20 Degrees to 550 Degrees F, Plug Construction Solid, Includes Pre-Applied Thread Sealant No, Includes Seal No, Black