Hawk Epoxy C1 Ultra Slow CatalystThe Sea Hawk Hawk Epoxy C1 Ultra Slow Catalyst can be used with Hawk Epoxy Resin for building or repairing planes, surfboards, canoes, boats, and many other substrates. Designed for construction or repairs with superior adhesion, filling, bonding, strength, and moisture barrier qualities at higher temperatures for a very slow speed at room temperatures.Pair Hawk Epoxy C1 Catalyst with corresponding letter size on R1 Resin.Example: Size 1 C1 Ultra Slow Catalyst quart requires Size 1 Hawk Epoxy R1 ResinSea Hawk Hawk Epoxy C1 Ultra Slow Catalyst compares to West System 209 Extra Slow HardenerFeatures: Good for warmest conditions; Long pot life; Good for when more time is needed; Specs: Minimum Recommended Temp: 70 F; Pot Life @ 70 F : 40-50 minutes (4 oz.); Working Time Thin Film: 3-4 hours; Cure to Solid Thin Film: 20-24 hours; Cure to Working Strength: 4-9 days; Mix Ratio Resin/Catalyst - 3:1; Click here to download Hawk Epoxy C1 Ultra Slow Catalyst Tech sheet