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Hardener selection—select a hardener for its intended use and for the cure
speed best suited for your job in the temperature range in which you are
working.
West System 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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