3-1/2″ Union Nut Black98212200Z

Ensure a rock-solid, leak-free connection for your pool equipment with this professional-grade 3-1/2 inch union nut. Specifically engineered for large-format filtration systems, this replacement nut provides the clamping force needed to secure 2-inch and 2.5-inch plumbing unions to the filter tank. Molded from high-impact, glass-reinforced thermoplastic, it is built to withstand extreme pressure surges and harsh chemical environments without stripping or cracking. The architectural black finish is UV-stabilized to prevent brittleness from sun exposure, making it an essential component for maintaining a safe and efficient equipment pad.