The SharkBite UC518LFA is a 3/4‑inch PEX barb plug designed to cap or terminate unused PEX lines in potable‑water or hydronic‑heating systems. This plug provides a secure, permanent seal when used with standard PEX crimp rings or stainless‑steel clamp systems, making it an essential component for system isolation, line testing, or permanent dead‑end terminations.
Made from lead‑free DZR brass, the UC518LFA offers excellent corrosion resistance and long‑term durability. It is suitable for both residential and commercial applications and integrates seamlessly with any approved PEX tubing type (A, B, or C). Whether used during installation, repair, or system modification, this plug provides a reliable, leak‑free solution.