Dura Seal is an instant leak sealer and coating that adheres to most substrates. Dura Seal features a superior, fast setting, rapid curing spray on elastomer with UV resistance that provides a flexible – no crack, no peel – coating that is paintable and long lasting. Once cured, it will help prevent rust and corrosion. Dura Seal provides up to 5 years of protection and withstands extreme temperatures of -30?F to 200?F without cracking and peeling. The elastomer coating remains flexible after drying with elongation up to 500%, allowing it to accommodate substrate movement including: shifting, expansion and contraction.