Epotek 302-3M is a premier, two-component epoxy adhesive specifically engineered for high-performance optical and fiber optic applications requiring a balance of low stress and exceptional moisture resistance. This versatile material is widely used for bonding glass, quartz, metals, and most technical plastics, providing a robust environmental seal that maintains joint integrity even in high-humidity conditions. Unlike standard adhesives, the 302-3M formula is designed to minimize internal stress during the curing process, protecting delicate optical fibers and sensitive sensor components from signal attenuation or mechanical damage. With its convenient room-temperature curing capability and low viscosity, it facilitates easy bubble-free potting and thin-line bonding. Once fully cured, it exhibits a high Shore D hardness and excellent chemical resistance, ensuring the long-term reliability of telecommunications hardware, medical endoscopes, and precision laser systems operating in challenging environments.