Starting in 2021, TotalBoat Flotation Foam no longer has a shelf life if it is unopened. Flotation Foam that was produced before 2021 has a shelf life of 6 months from the date of manufacturer. 

To promote the longest shelf life, only open the caps while dispensing each component. The bottles should be tightly sealed when they are not being dispensed. Leaving the caps off unnecessarily can expose the material to moisture in the air, or other contaminants, which may reduce the expansion rate of the foam. Store this product between 65-90°F, and do not allow it to freeze.