Things You'll Need
Heavy-duty rubber gloves
Metal objects composed of steel or iron, such as tools and patio furniture, are susceptible to rust when exposed to water. Rust generally attacks small scratches and dents in metal and expands until affected objects weaken and collapse. Although there are many rust-removal methods, naval jelly is an industrial strength, phosphoric acid-based gel used to dissolve rust in tiny crevices and other hard-to-reach areas of metal objects, where steel wool and sanders are insufficient. You can apply naval jelly using simple techniques.
Scrub dirt and rust encrustations off the affected metal using a wire brush. Remove as much rust as possible.
Put on heavy-duty rubber gloves and safety goggles for protection from the naval jelly, which contains acid.
Using a disposable paintbrush, spread the naval jelly generously onto the rusted metal. Let the naval jelly penetrate and dissolve the rust for 10 minutes. If the metal surface is heavily rusted, leave the naval jelly on for up to 20 minutes.
Saturate a rag with water. Wipe the wet rag over the affected metal to rinse off the naval jelly.
Wipe the metal completely dry using a clean towel.
Examine the metal for reddish-brown spots or flakes. If rust remains on the metal, repeat the process.
If you don’t have a rag handy, rinse the metal with a garden hose.
Leaving even a tiny speck of rust on the metal allows rust to return.