Super Seal Premium™ The Classic Auto A/C Sealant is a professional method of sealing leaks in mobile A/C systems. Seals leaks in evaporators, condensers, accumulators, as well as O-rings, gaskets, metal lines, and rubber hoses. Also prevents future leaks and drastically reduces comebacks. It is easily installed in minutes and is compatible with all mobile A/C refrigerants including R12, R134a, and R1234yf. Hose included.