Description WEST SYSTEM® 206 Slow Hardener is a low viscosity epoxy curing agent that gives longer working and cure times when needed or to provide adequate working time when temperatures are higher. When combined with 105 Resin in a five-part resin to one-part hardener ratio, the cured mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. Not intended for clear coating. Pot life at 22°C – 20 to 25 minutes Cure to a solid state: 10 to 15 hours Cure to maximum strength: 1 to 4 days Minimum recommended temperature: 16°C Mixing ratio: When used with Fast Hardener 205, or Slow Hardener 206, the ratio is 5 parts resin to 1 part hardener. When used with the Clear 207 hardener, the ratio is 3 parts resin to 1 part hardener.