UR5641 encapsulation resin is flame-retardant and halogen-free.

Does not contain any fillers. Is based on aliphatic urethane chemistry. Cures to provide a flexible, protective covering over luminaire elements. Offers high resistance to weather, acids and alkalis, water and mold growth. Is a two-part, semi-rigid, low-viscosity, optically clear polyurethane resin that meets the UL94 V-0 standard. Is suitable for protection of LED luminaires exposed to hazardous atmospheres. Demonstrates high dielectric strength at 11 kV/mm, thermal conductivity of 0.35W/m.K and provides an operating temperature range between -40 and +120 °C. Cures within 24 hours at 23°C or 4 hours at 60°C.

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