FDC Rust Converter Ultra 1 Gallon — Professional Rust Treatment & Primer, Fast Dry

FDC Rust Converter Ultra is a professional-grade rust treatment that chemically transforms active rust into a stable, dark protective coating and primes metal for painting.

This one-gallon formulation stops ongoing corrosion and leaves a paint-ready surface without the heavy labor of sandblasting, grinding, or complete metal replacement. Designed for auto bodies, agricultural equipment, railings, structural steel, marine fittings and general metalwork, the product simplifies restoration by converting iron oxide into an inert barrier that helps block moisture and reduce future rusting.

How quickly does FDC Rust Converter Ultra work?

The treated surface dries to a smooth, dark finish in roughly 20 minutes, with many rusted areas showing visible transformation after the first coat. For stubborn or heavy rust, a second coat improves coverage and conversion, and full cure takes about 48 hours before topcoating.

• Initial dry time: ~20 minutes to touch
• Recoat: apply second coat if needed for complete conversion
• Cure time before painting: 48 hours for best adhesion
• Store between 50°F and 100°F; do not freeze

What surface preparation and application method should I use?

Light mechanical cleaning to remove large flakes and heavy scale is recommended; this helps the converter reach rust beneath loose material. The product is ready-to-use — just shake or stir and apply by brush, roller, or pump sprayer for even coverage.

• Remove loose rust with wire brush or sandpaper
• Clean off dust, grease, and contaminants before applying
• Apply with brush, roller, or pump sprayer — no thinning required
• Clean tools immediately with soap and water

How much area does one gallon cover and what about compatibility with paint?

On smooth, non-porous metal, one gallon covers approximately 500 square feet; textured or porous surfaces will need more product. Once the converter has fully cured, it forms an excellent primer surface compatible with high-quality oil-based topcoats; no separate primer is required in most cases.

• Coverage: ~500 sq ft per gallon on smooth surfaces
• Porous or irregular surfaces increase consumption
• Seal cured coating with two coats of oil-based paint for long-term protection
• No additional primer usually necessary after cure

Who is this for: FDC Rust Converter Ultra is built for professional mechanics, restoration shops, contractors, fleet operators, property managers and serious DIYers tackling rusted metal. If you need a reliable, time-saving way to stop rust progression and prepare metal for painting without aggressive media blasting, this product is intended to make the job faster and more effective.