Use for caulking tubes, adhesive bottles, glues, pneumatic couplings, or anything else in shop shelves. Good sealing effect, due to the air or getting a caulk bottle or tube Caulk, paint, sealer, glue, chalk and anything you want to reseal and reuse The Caulk Cap Saver is a convenient, clean and flexible solution for keeping caulk and glue fresh. This replaces the rusted nails and screws that have always been used. Reseals caulk tubes.