Weld Mount 8040 Acrylic Adhesive w/Plunger [804030]8040 Acrylic Adhesive with Plunger AT 8040 is a good general purpose adhesive packaged in a manual plunger cartridge. Simply snip off the two end caps dispense the needed amount of adhesive onto a clean surface and mix it by hand. AT 8040 cures in 10 12 minutes, has a 6 minute working time and develops working strength in 40 minutes. AT 8040 has a 12 month shelf life when stored at 72. Weld Mount recommends that wherever possible this adhesive be