DuraCoat RBR32 - Rust and Bluing Remover, 1 qt.
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Removes rust, heat scale, oxides and bluing from metal surfaces without attacking the steel (provided immersion is no more than a couple hours). This solution is completely soluble in water and rinses easily in hot or cold water. This solution is concentrated, so mix 1 quart water to 1 quart remover. Can be used at room temperature or be heated to as high as 120° F to speed the process.