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West System Epoxy
209 Extra Slow Hardener
209 Extra Slow Hardener
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 by volume (3.5:1 by weight) |
| Pot life at 22°C | 40 to 50 minutes |
| Pot Life at 35°C | 15 to 20 minutes |
| Cure to a solid state at 22°C | 20 to 24 hours |
| Cure to a solid state at 35°C | 6 to 8 hours |
| Cure to max strength at 22° | 4 to 9 days |
| Min recommended temperature | 70°F (21°C) |
| Pumps | 300, 306-23 or 309-3 |