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Prices in USD. Free tracked shipping on 3-bottle bundles and above.
Rusted metal in, paint-ready surface out
Brush RustGuard™ over sound rust, let it cure, then paint. Images are illustrative — results depend on surface condition and preparation.
Practical comparison
| RustGuard™ converter | Naval jelly | |
|---|---|---|
| Mechanism | Converts oxide into a bound film | Dissolves oxide |
| Removal step | None — it stays as primer | Scrub and rinse thoroughly |
| Water needed | Only for cleaning tools | Yes, a full rinse |
| Flash rust after | No | Yes, prime immediately |
| Vertical hold | Brushable, does not run when applied thin | Excellent, it is a gel |
| Best for | Frames, chassis, gates, roofing, large areas | Localised heavy rust you can rinse |
| Coverage | ~55 sq ft per bottle | Small areas per tube |
When naval jelly is the better call
Small, thick, ugly patches of rust on a surface you can hose down — a vice body, a bench top, a cast-iron bracket — are ideal jelly territory. The gel sits on the rust, you leave it, you rinse it, you are done.
It becomes impractical the moment rinsing is a problem. Rinse water on a chassis runs into cavities and seams, and rinsing a roof means the runoff goes somewhere you may not want it.
Sequencing them together
On heavily corroded metal, using both in order gives the best finish.
- Scrape and wire-brush the loose scale off first
- Apply naval jelly only to the thickest localised rust, then rinse and dry fully
- Degrease the whole area so no residue remains
- Brush RustGuard™ over everything — treated patches and remaining surface rust alike
- Wait 24 hours, then topcoat the whole panel for one continuous film
Converter quantity for the final coat
Area
100 sq ft
Bottles needed
3
Recommended bundle
×3 — $42
Based on up to 55 sq ft per bottle on smooth steel, adjusted for surface condition. Estimates only — measure generously.
Frequently asked questions
Can I put RustGuard™ straight over naval jelly residue?
No. Rinse and dry first. Acid residue interferes with the conversion and can undermine your topcoat.
Is naval jelly more aggressive?
Yes. It is a concentrated acid gel — protect skin, eyes and any surrounding paint or masonry.
Which is cheaper for a large area?
The converter, comfortably. Gels are priced for spot work.
Does either fix rust holes?
Neither does. Holes need welding, a patch panel or replacement.
Keep reading
- Rust converter for iron and steel that leaves a paint-ready surfaceRustGuard™ rust converter reacts with existing rust and leaves a stable, primed surface you can paint. Bundles from $24 with worldwide shipping.
- Rust remover, or something that stops rust for good?Looking for a rust remover? Learn when stripping rust is right, when converting it is smarter, and how RustGuard™ saves hours of sanding.
- Rust converter vs rust remover: which one your job needsSide-by-side comparison of rust converters and rust removers: chemistry, effort, cost, flash rust risk, and which to use on your job.
- Rust converter vs rust-encapsulating coatingsEncapsulators seal rust under a hard film; converters change the rust chemically. Compare prep, cost, repairability and best fit.
- Rust converter safety, storage and disposalPPE, ventilation, storage temperatures, spill handling and correct disposal for water-based rust converter. Practical safety guidance.
Stock up & save
Choose your RustGuard™ bundle
Ships from our US fulfilment partner, typically 3–7 business days. 30-day money-back guarantee.