To make opened polyurethane glue last, proper storage is necessary. Extrude a one-inch bead of adhesive to remove all air from the tube and any product that has already come into contact with moisture in the air. Next, securely attach the cap and store it in a cool, dry place. If recapped and stored properly, the shelf life of an opened Infinity Bond 50-gram cartridge can be extended up to 12 months.