Livos Duro Natural Rust Preventive Primer (623)Duro is a fantastic product for the prevention of rust, without the nasty chromates or lead found in other alternatives on the market. Duro can be used on both exterior and interior iron and or steel surfaces. It can also be applied to heating pipes and radiators. Available Colours: 051 Persian Red, 211 Grey White. Available Sizes: 0. 125 L, 0. 375 L, 0. 75 L Coverage: 1 L (undiluted) is sufficient for approximately 12 18 m2 per coat. Coverage