HinderRUST Electrical Corrosion Protection is engineered by Fluoramics to prevent corrosion and oxidization on electrical terminals and hardware. It has a high dielectric constant and can be used with AC and DC currents. Designed to spread and soak into hard-to-reach areas, its penetrating protection fights oxidization on copper, aluminum, brass, and steel, and will not attack plastics. It's a rust-stopper that is moisture-displacing, solvent-free, and non-flammable (liquid). It is not electrically conductive and may be applied on both new installations and on existing rust without any prep. Available in an 8 fl. oz. refillable Brush-It Bottle, 11.7 fl. oz. aerosol spray can, 1qt jug, and 1 gallon jug.