TotalBoat Flotation Foam does not have a defined shelf life if it has not been opened, and stored properly. Older TotalBoat Flotation Foam produced before 2021 had a 6 month shelf life from the date of manufacture — this does not apply to the newer product.
Though Flotation Foam does not have a shelf life, if the product is not stored properly or it has been exposed to sufficient moisture or other contaminants, it may not yield proper expansion. Always replace the caps immediately after dispensing each component, and store the product between 65-90°F. Do not allow this product to freeze.