JAYSUING Metal Rust Remover, Water-Based Metallic Paint Rust Conversion Agent, Iron Rust and Dust Protection, Car Primer Cleaner, Metal Rust Solver Paint, Rust Converter Metallic Varnish with Brush

Automotive rust proofing primers work by chemically converting existing iron oxide (rust) into a stable, black, protective polymer barrier, which prevents future corrosion and provides a paintable surface. They are an efficient, long-lasting solution, particularly for hard-to-reach areas where manual rust removal is difficult. 

How They Work

Rust converter primers use a two-part process involving chemical and physical changes to stabilize metal surfaces. 

• Chemical Conversion: Active ingredients, usually tannic acid or phosphoric acid, react with the reddish-brown iron oxide (rust) and transform it into a stable, inert black substance like iron tannate or iron phosphate. This process neutralizes the existing corrosion.
• Protective Barrier: An accompanying organic polymer or epoxy resin in the formula then forms a durable, non-porous film over the converted rust. This barrier seals the metal from moisture and oxygen, which are necessary for new rust to form, offering long-term protection. 

Key Benefits

• Hassle-Free Application: These primers reduce labor by eliminating the need for intensive sanding or sandblasting down to bare metal; only loose rust needs to be removed with a wire brush or sandpaper.
• Long-Lasting Protection: The converted layer, when top-coated with an oil-based paint, resists weather, salt spray, and chemicals, ensuring the finish lasts for months or longer without peeling or cracking.
• Versatile Use: The product is suitable for a wide range of ferrous metal objects, including car chassis, garbage cans, railings, chains, and various home and garden items.
• Acts as a Primer: The resulting black coating provides an excellent base for a topcoat of paint, improving adhesion and durability of the final finish. 

Application Tips

For the best and longest-lasting results, proper application is crucial. 

1. Surface Preparation: Remove any loose rust, dirt, grease, or flaking paint with a wire brush or sandpaper. The remaining tight rust is necessary for the chemical reaction to occur.
2. Application: Apply in a thin, even layer using a brush, roller, or spray gun. A second coat can be applied to heavily corroded areas after the first has dried.
3. Drying and Curing: The product typically dries to the touch in 20-40 minutes, but often requires a full 24-48 hours to cure before applying a topcoat.
4. Topcoat: A high-quality oil-based or epoxy topcoat is recommended for maximum durability and UV resistance, as many rust converters are not UV stable on their own.