Permanently seals leaks in, condenser, evaporator, accumulator, compressor, gaskets, o-rings, metal and rubber hoses. For use in all mobile air conditioning systems R134A and R12/R22. Target Seal works exactly the same as Super Seal premium, but due to the reduced amount of active ingredients, only 0.5 fl. oz. instead of the 1.5 fl. oz. contained in Super Seal Premium, will likely not continue to circulate in the system.