TRA-BOND 516H01 is a low-viscosity, fiber-optic adhesive that can be room temperature- or heat-cured and is dark blue in color to allow for easy polishing. 516H01 has an ultimate Tg of 49 degrees C and provides low-stress connections. This two-part epoxy was formulated for terminating all types of fiber optic connectors, and has also been used for bonding LED displays, lenses, and other optical components.