West System 207 Special Clear Hardener - 0.66 Pint

Features:

• West Systems 207 Special Clear Hardener™ was developed for coating and fiberglass cloth application where an exceptionally clear, moisture-resistant, natural wood finish is desired
• 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 sand the following day
• Boats can be built faster
• Builders also appreciate the excellent fiberglass wet-out characteristics achieved with 105/207, yet it won't drain from vertical surfaces like the very slow curing, low-viscosity epoxies
• When 105 Epoxy Resin is used with 207 Special Clear Hardener it 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 helps provide a beautiful, long lasting finish when used with quality UV filtering varnish
• 105 Epoxy Resin used with 207 Special Clear Hardener cures clear and colorless
• Mix Ratio: Resin / Hardener 3 Parts 105 Resin / 1 Part 207 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 300, 306-23 or 309-3 (Sold Separately)

Click Here for a Technical Data Guide for this Product

* Dispensing and Mixing

• Dispense the proper proportions of resin and hardener into a clean plastic, metal or wax-free paper container
• Don't use glass or foam containers because of the potential danger from exothermic heat buildup
• DO NOT attempt to adjust the epoxy cure time by altering the mix ratio
  • An accurate ratio is essential for a proper cure and full development of physical properties
• Dispensing with Mini pumps
  • Most problems related to curing of the epoxy can be traced to the wrong ratio of resin and hardener
  • To simplify metering, we recommend using calibrated WEST SYSTEM Mini Pumps to dispense the resin and hardener
  • Mini Pumps are calibrated to deliver the proper working ratio of resin to hardener
  • Pump one full pump stroke of resin for each one full pump stroke of hardener
  • Depress each pump head fully and allow the head to come completely back to the top before beginning the next stroke
  • Partial strokes will give the wrong ratio
  • Read the pump instructions before using pumps
  • Before you use the first mixture on a project, verify the proper ratio according to the instructions that come with the pumps
  • Re-check the ratio anytime you experience problems with curing
• Dispensing without Mini Pumps (Weight/volume measure):
  • To measure 105 Resin and 205 or 206 Hardener by weight or volume, combine five parts resin with one part hardener
  • To measure 105 Resin and 207 or 209 Hardener by volume, combine three parts resin with one part hardener (by weight, 3.5 parts resin-1 part hardener)