TEROSON® VR 625 is a clear, slightly brownish, solvent-based rust-converting spray for removing all kinds of rust. Organic agents convert the rust to a stable complex compound. During this process, the clear liquid changes from dark blue to brown-black. When dry, the synthetic resin forms a paint-like, sandable protective film that remains on the metal and works as a primer. It is suitable for all ferrous substrates and is used for a wide range of automotive and industrial maintenance and repair tasks. However, it is not suitable for parts subject to high temperatures, such as exhaust systems and stove chimney pipes.