Evapo-Rust's Rust-Block is a water-based rust inhibitor suitable for all ferrous and non-ferrous metals, such as iron, copper and brass. Rust-Block is applied by dip or spray and forms a thin barrier of protection for 6-12 months. Provided you've wet the surface with product, it is coated. It is designed for use on parts that are stored indoors long term or in humid enviroments, to protect against rust incursion.A great complementary follow-up product after Evapo-Rust Rust Remover, for additional protection post rust removal, but is equally suited to prevention on new equipment that is free of rust.Rust-Block is: Non-corrosive Water-based Non-flammable Economical Safe to use on all types of metal Easy to use Protects for six to twelve months Can be reapplied Can be washed off for metal coating if required
