Yamaha - Yamashield Rust & Corrosion Protectant - 12 oz. Spray Can - ACC-YAMSH-LD-00. Yamashield is designed to create a non-conductive shield on surfaces that are exposed to the elements. This shield will reduce the effects of moisture on metal components and electrical connections. (Replaces Boeshield T-9 Protectant and Lubricant ACC-T9SPR-AY-00).. A high-quality combination of solvents, lubricants and waxes designed for penetration, moisture displacement, lubrication while providing a shield of protection. It loosens rusty and corroded parts that dries to a thin, waxy film that clings to metal that requires a solvent to cut through.. Features:. Size - 12 oz.