KBS Coatings Posted June 7, 2008 Report Posted June 7, 2008 An unopened can of RustSeal can last for over 2 years or longer, as it needs moisture present in the air for the catalyst for curing. As far as AquaKlean and RustBlast, as long as the cap is replaced tightly and evaporation is kept to a minimum, they too should last for years and lose little if any effectiveness. What type of project are you working on? Quote
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