The 207 Hardener was especially developed for use with West System 105 Resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired. Cures to a light amber color, similar to traditional spar varnishes. An ultraviolet inhibiting additive improves the resistance of the mixture to sunlight, but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish. 207 is designed to self-level for smooth finishes as well as wet-out and bond fabrics. Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 hardeners. It's also used for laminating veneers where bleed through at joints may be exposed to sunlight.
• Pot life at 72°F - 20 to 25 minutes
• Cure to a solid state - 9 to 12 hours
• Cure to maximum strength - 4 to 7 days
• Minimum recommended temperature 60°
• Use pump 300, 306-3 or 309-3 to ensure proper mixing
NOTE: West System resins and hardeners are each available in 4 sizes, and for each size of resin, there is a corresponding size container of hardener.
To ensure a correct match, be sure all containers are labeled with the same "group size" letter (A, B, C, or E). This letter can be found at the end of each part number on the can.