Permabond UV681 is a versatile UV-curable clear coating designed for precision applications. This low-viscosity formulation flows smoothly to create bubble-free, optically clear coatings ideal for electronics protection and smart card microchips. With its rapid curing capability under various UV light sources, this coating offers excellent control over the application process. The cured coating provides impressive tensile strength of 1450-1700 psi and maintains 60% of its strength at 212°F. Its outstanding light transmittance of over 98% ensures crystal-clear results, while the Shore D hardness of 50-65 delivers reliable protection. The coating's tack-free surface and ability to resist wave-soldering make it particularly suitable for electronic components. This 100% solids formulation can be cured using different UV sources, from low-power battery lamps to high-intensity LED systems, offering flexibility in production environments.