209 Epoxy Hardener (EXTRA SLOW)
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.
- 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 maximum strength at 21°C: 4 to 9 days
- Minimum recommended temperature: 21°C