EL-CAST FR Resin with 440 hardener is a filled, two-component, low-cost, epoxy system with excellent bonding qualities to metals, plastics, and ceramics. This system is UL-approved at 94 V-O. Its good air release and low viscosity allows the cured resin to have a high gloss finish. Ideal for pulse transformers, magnetic components, noise interference filters, marine sonar devices, and many other potting, casting, or encapsulating applications.