Epotek OG198-54 and OG198-55 are high-performance, single-component UV-curable adhesives designed for the precision bonding of optical fibers and lenses. These materials are formulated to provide a rapid cure under UV light while maintaining low internal stress, which is critical for preventing signal attenuation in fiber optic interconnects. The OG198-54 is optimized for standard optical bonding, while the OG198-55 variant offers a slightly modified rheology and cure profile to accommodate more complex assembly geometries. Both adhesives feature excellent moisture resistance and superior adhesion to glass, quartz, and technical plastics. Their high glass transition temperature ensures that optical alignments remain perfectly stable even under significant thermal fluctuations. These adhesives are the definitive choice for manufacturers of high-speed telecommunications hardware and medical endoscopes requiring rapid assembly and absolute optical precision.