What is the shelf life for TotalBoat Seal? Annette DiOrio December 08, 2021 20:32 Updated When sealed properly and stored at 70°F, TotalBoat Seal has a shelf life of 36 months. Related articles How long does TotalBoat Seal take to cure? What type of sealant is TotalBoat Seal? Do I need to prime the surface before using TotalBoat Seal? Can I use TotalBoat Seal below the waterline? How soon can I apply another layer of TotalBoat Flotation Foam to the previous layer? Comments 0 comments Please sign in to leave a comment.