How long is the shelf life for TotalBoat Seal? Eric Boudreau December 31, 2021 19:38 Updated The shelf life for TotalBoat Seal is 36 months if stored tightly sealed at an ambient temperature of 70°F. Related articles Does TotalBoat Seal require a primer before application? What is the cure time for TotalBoat Seal elastomeric sealant? Comments 0 comments Article is closed for comments.