Quantum® 73421 is a state-of-the-art, single component, solventless, room temperature curing cyanoacrylate adhesive that polymerizes rapidly when pressed into a thin film between parts. The presence of surface moisture commences the cure of the adhesive. Quantum? 73421 develops handling strength within seconds and full functional strength in a few hours. Quantum? 73421 can bond a wide variety of surfaces including metals, thermoplastics, elastomers, ceramics, leather, cork, and paper, but is particularly suited for bonding hard-to-bond plastics. Notwithstanding the superior bonding capability of Quantum? 73421, it is NOT recommended for long-term glass to glass bonding applications.