Seahawk "Hawk Epoxy" C5 Clear Finish Catalyst. C5 Clear Finish Catalyst is part of the Hawk Epoxy system. This state-of-the-art epoxy system is for building and repairing boats, planes, surfboards, canoes, and many other substrates. There are also a multitude of home construction and repair projects perfectly suited for Hawk Epoxy. The foundation of our epoxy system is our R1 Epoxy Resin which fulfills all of the different application needs with its eleven-part catalyst and fairing options. Bonding, fairing, coating, waterproofing and air exchange reduction have never been simpler. C5 Clear Finish Catalyst is designed for very clear fiberglass cloth and coating applications with exceptional moisture barrier characteristics. Perfect for natural wood and carbon fiber clear coats with no blush. Longer working times in very warm temperatures.