Zurn Aquaflush .5 Gallon Chemical and Clog-Resistant Diaphragm Kit P6000-EUR-EWS is designed for urinal repair, and is made of chemical-resistant TPE material that resists chemical infiltration that cuts short the life of black diaphragms. It is designed to fit Zurn AquaFlush, Sloan Royal, and Sloan Regal flush valves.