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CONATHANES® EN-2541 and EN-2543 are filled, flame resistant polyurethane resins, specially formulated for general purpose electrical/electronic potting, casting and encapsulation. When tested in accordance with UL-94, flame resistance ratings of 94V-O are obtained. EN-2541 and EN-2543 have excellent handling properties at room temperature. Cure can be accomplished at room or elevated temperatures.