Eastwood's Rust Converter halts residual rust in its tracks and converts the surface to a black protective polymeric coating. This protective coating seals out moisture and can be top coated with most paints. This single component converter can be sprayed or brush applied. One gallon covers about 200-300 square feet, one quart covers about 50 to 75 square feet.
Simply use a wire brush to remove loose rust and scale. Brush on or spay on the converter with no mixing needed and the treated surface will turn to a dark paintable surface.