West System Hardener Special Clear 207 (.33 G)
Use this blush-free hardener with 105 Resin (3 parts resin to 1 part hardener) for coating and fiberglass cloth application where an exceptionally clear, moisture resistant, natural finish with UV inhibitor is desired. Won't turn cloudy or blush in humid conditions. Reliable and easy to use. You can apply 3 or more coats in a single day without additional surface preparation. Has great fiberglass wet-out characteristics when mixed with 105 Resin yet won't drain from vertical surfaces like very slow-curing, low viscosity epoxies.
Pot life at 22°C (72°F): 20 to 26 minutes
Cure to a solid state: 10 to 15 hours
Cure to maximum strength: 4 to 7 days
Minimum recommended temperature: 16°C (60°F)