Loctite C5A paste anti-seize lubricant is compatible with brass, copper, iron, plastic and steel. Main ingredient of comprised of copper. Is rated as Food Grade, Military Grade. Can be used under the following temperature ranges: -20 F minimum operating temperature to +1800 F maximum operating temperature. In addition to the other features this product also has corrosion-resistant properties and meets the following standards: CFIA Approved, MIL-PRF-907E.