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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