DINITROL 4941 is a black solvent based underbody coating which resists corrosion & abrasion. The underbody coating product is widely used in the treatment of vehicles during production, at import plants & in aftermarket applications. When applied to a clean, dry surface, it adheres to both painted surfaces & those coated with a layer of PVC or similar material. Zinc, rubber & plastics are completely unharmed by the product. DINITROL 4941 / Car is also designed for use on spare parts, machines & iron & steel structures in highly corrosive environments. Apply over Dinitrol HS 3125 for the ultimate in rust prevention. To apply this product use Wax / Shutz Gun. Available in Aerosol (500ml) or 1 litre.