Rust OFF Gel Rust Remover Gel Rust Converter Gel 650gRUST OFF Gel RUST REMOVER GEL, RUST CONVERTER GEL Advanced Power Formulation GEL Rust Off Gel removes and converts rust (oxidisation), rust staining, stainless steel tea staining, calcium staining, limescale staining, brown mineral staining and iron ore staining Rust Off is a gel formulation so that it will not run onto other surfaces and can be applied to vertical surfaces and even surfaces facing downwards where liquid products will drip off.