The Leviton 26W81-B EB WG PLG LCK 4P5W3PH L21-20P is a heavy-duty electrical plug designed for industrial and automotive applications. It resists water, acids, alkalies, and many lubricants and solvents, providing reliable performance in harsh environments. This watertight plug features an IP69K rating when mated or capped, ensuring robust protection during high-temperature, high-pressure washdowns. Its unique "tongue and groove" design offers superior ingress protection from water, dirt, and debris, while one-piece contacts deliver maximum conductivity for dependable electrical performance.