Rust converter is a chemical rust remover solution used to treat rusted metal surfaces by converting iron oxide (rust) into a stable, black protective coating. This process helps stop further corrosion and prepares the surface for painting or sealing. Rust converters are commonly used in automotive, marine, and industrial maintenance to extend the life of metal parts without the need for complete rust removal. They also come in a rust converter spray, a rust cleaner or rust remover spray.