If stored properly and closed tightly after use, the shelf life for TotalBoat 4-Minute Epoxy adhesive is two years from the date of manufacture.

Regardless of the manufacture date, the product is considered good to use as long as it can be dispensed from the syringe evenly and consistently, with no signs of clumping or crystallization. When in doubt in the case of an older package of 4-Minute Epoxy, do a small test sample to make sure the product cures properly.