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West System 207-SA Special Clear Hardener
BLUSH-FREE 207 SPECIAL CLEAR HARDENER is an excellent choice for clear coating application. Blended with 105 Epoxy Resin, 207 Hardener will not blush or turn cloudy in humid conditions. Thin film applications roll out and tip off smoothly, requiring less sanding in preparation for finish coatings.
THIS WATER-CLEAR EPOXY curing agent was developed for coating and fiberglass cloth application where an exceptionally clear, moisture-resistant, natural wood finish is desired. Mix it with WEST SYSTEM 105 Epoxy Resin at a 3-parts resin to 1-part hardener ratio.
STRUCTURAL BONDING PROPERTIES are similar to other 105/20X resin and hardener combinations. Easily modified with WEST SYSTEM fillers, pigments, and additives to suit an enormous variety of construction and repair projects, including fiberglass boat repair, strip kayak and canoe construction.
POT LIFE AT 72°F (22°C) is 20 to 26 minutes. Cures to a solid state in 10 to 15 hours. Cures to maximum strength in 4 to 7 days. Minimum recommended working temperature is 60°F (16°C). Does not contain VOCs and has relatively high flash point and no solvent odor, making it much friendlier to use than styrenated resins.
Pair with WEST SYSTEM 105-A Epoxy Resin
SPECIAL COATING HARDENER is formulated for use with West System brand #105 resin in coating applications where extremely clear finish is desired, especially when working in humid and/or low temperature conditions. Provides adequate adhesion for bonding applications. Contains UV-stabilization additive but still requires long-term UV protection with quality marine paint or varnish. Provides 25-30 minutes of pot life at 70 degree F and will cure to a solid state in 9-12 hours. Further hardening occurs over 4-7 days. Must be dispensed with #303 special-ratio mini pumps to achieve the proper 3 parts #105 to 1 part #209 mixture. Or dispensed with either #306-3 or #309-3 high capacity pumps. Size: . 66 Pint.