Instantbond® 123 is a medium viscosity 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. Instantbond® 123 develops handling strength within seconds and full functional strength in a few hours. Instantbond® 123 can bond a wide variety of surfaces including metals thermoplastics elastomers ceramics leather cork and paper. Notwithstanding the superior bonding capability of Instantbond® 123 it is NOT recommended for long-term glass to glass bonding applications. Chemistry is Ethyl Cyanoacrylate.