Supply Giant cap for closing off pipes in applications with a maximum pressure of 150 lb. In particular, this fitting is made of black coated Malleable iron with female tapered thread, for a tight seal. Furthermore, UL/ULC and FM approved the design, which conforms to the ansi/asme B16.3 and B16.14 and ASTM a-197 standards. Additionally, the fitting is produced in an ISO9001:2000 manufacturing environment, and is pressure tested before leaving the facility. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.