Discover the high-performance 1502 WECO HNBR 3" Hammer Union Fittings, designed for durability and chemical resistance. Ideal for oil drilling applications, these seals ensure leak-proof connections with pressure ratings up to 15,000 PSI. Available in various sizes and materials, including Nitrile, HNBR, and PTFE, reinforced with brass or stainless steel rings for enhanced performance.