Can I use TotalBoat Seal below the waterline? Annette DiOrio December 08, 2021 20:02 Updated Yes, you can use our UV-stable, waterproof TotalBoat Seal elastomeric sealant below or above the waterline. Related articles What are the recommended applications for TotalBoat Seal elastomeric sealant? What type of sealant is TotalBoat Seal? What type of caulk gun do I need to dispense TotalBoat Seal? Is TotalBoat UV Cure Clear Resin UV stable? Can I used TotalBoat FixWood epoxy putty to do repairs underwater? Comments 0 comments Please sign in to leave a comment.