CRC’s Heavy Duty Corrosion Inhibitor is a long-term, flexible corrosion inhibitor that seals out moisture by forming a corrosion-proof insulating film that resists wash-off and abrasion. The inhibitor protects and preserves metal surfaces, electrical connections and engine components and fasteners that are subject to saltwater spray and high humidity. CRC’s Heavy Duty Corrosion Inhibitor also provides effective protection for steering and throttle linkages. 10 oz. can.