Only Once II stops rust in its tracks by instantly bonding to rust, stopping its growth, transforming it into a non-rusting paintable surface, and preventing future rust formation. Existing rust is transformed to a firm, weatherproof, black protective polymeric coating that seals out oxygen and moisture.
Only Once II is not only a rust treatment but also works as a primer to prepare a rusted surface for the application of quality oil-based paints. Surfaces protected with this primer and an oil-based paint system resist the effects of weather, rain, sun and salt spray without peeling or cracking. This easy-to-use product is the first step in providing long-term protection of steel and iron surfaces.
