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West System Epoxy
205 Fast Hardener
205 Fast Hardener
205 Fast Hardener is a medium-viscosity epoxy curing agent. It is used in a majority of situations, at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. When mixed with the 105 Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. Not intended for clear coating.
Mix Ratio, Resin:Hardener
5:1 by weight or volume*
Pot life at 72°F (22°C)
9 to 12 minutes
Cure to a solid state
6 to 8 hours
Cure to maximum strength
1 to 4 days
Minimum recommended temperature
40°F (4°C)
Pumps required
300, 306-25 or 309
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