Epotek 301-2FL delivers a specialized, two-component, optically clear epoxy bond for applications that demand high flexibility and exceptionally low internal stress. This low-stress formulation modifies the Epotek 301-2 chemistry to deliver a more compliant bond that absorbs mechanical shock and withstands rigorous thermal cycling without cracking or delamination. As a result, engineers specify it wherever a flexible, reliable bond line matters most.
Epotek 301-2FL Features
- Two-component, optically clear epoxy
- Low viscosity for easy processing
- 10-hour pot life at room temperature
- Cures in 4 hours at 60°C
- Shore 70D hardness once cured
- Light transmission ≥99% in visible and near-IR
Because of its unique formulation, the epoxy features a lower glass transition temperature, so it remains flexible even in demanding environments. Consequently, it excels in the fiber optic industry for potting and encapsulation, and manufacturers frequently choose it for medical device assemblies where vibration damping is paramount. Additionally, the low viscosity and generous 10-hour pot life give technicians plenty of working time before the mixture begins to set.
Applications
With its low viscosity and convenient room-temperature curing capability, this epoxy ensures easy processing for delicate assemblies. It also demonstrates excellent light transmission in the visible and near-IR regions and offers superior adhesion to glass, quartz, metals, and technical plastics. As a result, it suits high-reliability electronics that must withstand harsh physical handling, including components used in aerospace and scientific instrumentation. Semiconductor manufacturers also rely on similar EPO-TEK formulations for flip-chip underfill and glob-top encapsulation, where impact and vibration resistance protect delicate die-level connections.
Lap shear strength exceeds 2,000 psi, so bonded assemblies maintain structural integrity under mechanical load and vibration. For full cure schedules, storage conditions, and safety data, refer to the manufacturer’s technical datasheet before specifying this adhesive for your application.
Browse our full optical adhesives range to compare Epotek 301-2FL against other EPO-TEK formulations, or contact our technical team for guidance on choosing the right epoxy for your bonding requirements.
