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Product Details

West System 209 Extra Slow (Tropical) hardener is formulated for use with WEST SYSTEM 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.

It provides approximately twice the working time of 206 Slow Hardener. 209 cures to a clear amber-colored solid with good physical properties and moisture resistance for bonding and coating applications. Not intended for clear coating.

Tech Specs
Mix Ratio, Resin:Hardener3:1 by volume (3.5:1 by weight)
Pot life at 72 F (22 C)40 to 50 minutes
Pot life at 95 F (35 C)15 to 20 minutes
Cure to a solid state at 72 F (22 C)20 to 24 hours
Cure to a solid state at 95 F (35 C)6 to 8 hours
Cure to maximum strength at 72 F4 to 9 days
Minimum recommended temperature70 F (21 C)
Pumps required300, 306-23 or 309-3

Reviews for WEST System 209 Tropical Hardeners

2 of 2 Reviews

September 6, 2019

What I needed.
By Keith from Albuquerque, New Mexico

Verified Purchase

Building radio control model planes and need to "fill in the gaps" with this and micro balloons. Have not used. Just got it, as suggested by another modeler, to have available when the "filling" begins.

Bottom Line Yes, I would recommend to a friend

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July 15, 2013

Must-have for the novice!!!!
By Floridacharger from Florida

Allowed me plenty of time to get transom in and secured before it started gelling and curing. Transom is now bulletproof! And in 90+ degrees!

Bottom Line Yes, I would recommend to a friend

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