West System 207 Special Clear Hardener was developed for use with West System 105 epoxy resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired.

Improved formula chemistry allows for true clear cure with the same UV protection but without an amber tint. An ultraviolet inhibiting additive improves the resistance of a West System epoxy/hardener mixture to sunlight but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish. The proper ratio is 3 parts resin to 1 part hardener, with a mixing pot life of 20 to 26 minutes. Epoxy mixture will achieve solid state in 10 to 15 hours after application.

207 is designed to self level for smooth finishes and to wet-out and bond fabrics. It's also used for laminating veneers where bleed-through at the joints may be exposed to sunlight. Although this special clear formula 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.