West 207-SB Special Clear Hardener .33 Gallon
West System 207-SB Special Clear HardenerTM was developed for coating and fiberglass cloth application where an exceptionally clear, moisture-resistant, natural wood, or a clear carbon fiber finish is desired. West System 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.
Professional and first-time builders like 207 because it is reliable and easy to use. Three coats or more can be applied in one day without additional surface preparation. Fewer coats are required to fill fiberglass weave and in most cases the final coating can be sanded the following day. Boats can be built faster. Builders also appreciate the excellent fiberglass wet-out characteristics achieved with the 105/207 combination, yet it won't drain from vertical surfaces like the very slow curing, low-viscosity epoxies.
West System 105/207 has strong physical properties, so it can be used as a structural adhesive for gluing and laminating. It has excellent compatibility with paints and varnishes. An ultraviolet inhibitor in 207-SB helps provide a beautiful, long lasting finish when used with quality UV filtering varnish. A West 105/207 combination cures clear and colorless.
- Pairs with the 105B size Resin
- Mix Ratio, Resin:Hardener 3 parts resin : 1 part hardener
- Pot life at 72°F (22°C): 20 to 26 minutes
- Cure to a solid state: 10 to 15 hours
- Cure to maximum strength: 4 to 7 days
- Minimum recommended temperature: 60°F (16°C)
- Pumps: West 300
West 105 207S Technical Data Sheet
West 207 MSDS