Epotek 301-2FL is a specialized, two-component, optically clear epoxy adhesive specifically engineered for applications requiring high flexibility and exceptionally low internal stress. This material is a modified version of the 301-2 chemistry, designed to provide a more compliant bond that effectively absorbs mechanical shock and withstands rigorous thermal cycling without the risk of cracking or delamination. Because of its unique formulation, it features a lower glass transition temperature which allows it to remain flexible in demanding environments. It is a staple in the fiber optic industry for potting and encapsulation, and is frequently utilized in the medical device sector for bonding components where vibration damping is paramount. With its low viscosity and convenient room-temperature curing capability, it ensures easy processing for delicate assemblies. The 301-2FL demonstrates excellent light transmission in the visible and near-IR regions and offers superior adhesion to glass, quartz, metals, and technical plastics, making it the ideal solution for high-reliability electronics subject to harsh physical handling.