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West System

205/206/207 West System Hardener

Regular price $19.99 incl. GST
Regular price Sale price $19.99
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These Hardeners are part of a TWO PART system that works ONLY in conjunction with West System 105 Resin.

205/206 Hardener

West System Hardener® (formally Z205/Z206) is a medium-viscosity epoxy curing agent. It is used in a majority of situations, at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. When mixed with the 105 Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. Not intended for clear coating.

205

  • Pot Life at 72F (22C): 9 to 12 minutes
  • Cure to a solid state: 6 to 8 hours
  • Cure to maximum strength: 1 to 4 days
  • Minimum recommended temperature: 40°F (4°C)

206

  • Pot life at 72°F (22°C): 20 to 25 minutes
  • Cure to a solid state: 10 to 15 hours
  • Cure to maximum strength: 1 to 4 days
  • Minimum recommended temperature: 60°F (16°C)

207 Special Clear Hardener

207 Special Clear Hardener™ was developed for coating and fiberglass cloth application where a 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 sanded 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.

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 helps provide a beautiful, long lasting finish when used with quality UV filtering varnish.

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 300, 306-23 or 309-3

Customer Reviews

Based on 11 reviews
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D
Dave Dawson
207 Clear Hardener

Quick delivery and perfectly clear result for my purposes.

P
Peter Kewn
First class

Super fast delivery and great people to talk to.
Thanks fo for a first class service.

A
Andrew Bowring
Excellent product.

What I needed, when I needed it, thanks

P
Paul Cosbrook
205

This hardener worked well with many brands of part A epoxy. Did find for some of my purposes was a bit quick at cure start. Some light thinning stopped that.

k
koan vette

205/206/207 West System Hardener