West System 209 Extra Slow Hardener is formulated for use with WEST SYSTEM Brand 105 Resin for general coating and bonding applications in extremely warm and/or humid conditions or when extended working time is desired at room temperature. Provides approximately twice the working time of 206 Slow Hardener. Forms a clear, amber-colored solid with good physical properties and moisture resistance for bonding and coating applications. Not intended for clear coating.

• Mix Ratio, Resin:Hardener - 3:1
• Pot life at 72°F (22°C) - 40 to 50 minutes
• at 95°F (35°C) - 15 to 20 minutes
• Cure to a solid state at 72°F (22°C) - 20 to 24 hours
• at 95°F (35°C) - 6 to 8 hours
• Cure to maximum strength at 72°F - 4 to 9 days
• Minimum recommended temperature - 70°F (21°C)
• Pumps required - 300, 306-3 or 309-3