ASC Anvil 3/4" Black Pipe Cap. It is made of durable malleable iron with a black finish for corrosion resistance. This cap has a maximum pressure of 300 psi and is suitable for gas, water, and oil applications. It meets ASME B16.3 and B16.39 standards and is 100% gas tested at a minimum of 100 PSI. Packaged in a bag.