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West System 206 Slow Hardener is a low-viscosity epoxy curing agent for use when extended working and cure time is needed or to provide adequate working time at higher temperatures.
At 72-degrees, 206 Slow Hardener will have a 20-25 minute pot life. When combined with 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 applications.
| Mix Ratio, Resin:Hardener | 5:1 by weight or volume |
|---|---|
| Pot life at 72 F (22 C) | 20 to 25 minutes |
| Cure to a solid state | 9 to 12 hours |
| Cure to maximum strength | 1 to 4 days |
| Minimum recommended temperature | 60 F (16 C) |
| Pumps required | 300, 306-25 or 309 |
Reviews for WEST System 206 Slow Hardeners
February 16, 2023
Verified Purchase
I use this epoxy to do furniture repairs. It's the best I've used. This hardener gives plenty of working time to get things right.
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February 12, 2023
This epoxy is what we use on shafts for ships to protect them from rust, and it works extremely well, but the stuff thats in the SDS is extremely toxic compared with other epoxies, if you take a whiff of this stuff or have a large surface area of wet epoxy that is uncured the diethylenetriamine poisoning can easily kill you. My lungs were filling with fluid 24hrs after I was fiberglassing a tailshaft for a ship.
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August 11, 2022
Verified Purchase
Always good
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February 9, 2022
Verified Purchase
I never worry about the fiberglass portion of my boat building because of the west system of products.
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August 25, 2021
Verified Purchase
Being summer, I really want the extra pot life time that this slower hardener allows. It also has little or no blush when cured and even as a slow hardener, usually set up to the touch in 12 hours
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May 8, 2021
I purchased online a gallon of West System 105. When I was making my online order I selected the web page for the 206 hardener . The web site came up with a picture of the 0.87 quart size of hardener next to which was the description (I didn't notice the description was for the "A" size) inadequate for the gallon of 105 I purchased. I didn't notice the error until the shipment arrived with a gallon of 105 and about one cup of 206. This mis-leading web sit photo caused an error that has delayed my project. The photo on the web site should match the description and change when you select a different size.
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July 16, 2020
Verified Purchase
I have used the resin and both 205 and 206 hardener for many years for boat repairs and custom door making . The bond is very strong.
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January 29, 2020
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Even though it is winter, I still use the slow hardener. I just don't like to have my pot go off before I"ve used all that I mixed. This stuff is excellent.
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March 8, 2019
Verified Purchase
Great Service, even for small orders!
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November 16, 2017
Verified Purchase
I have been using West epoxy for decades. I have used it for sailboat maintenance, radio antennas, car bodywork, building repairs, toys to timbers. Anything that needs to be filled and faired. The ability to select a hardener for speedy hardening or extended working time is a great advantage. I have used soft filler to repair wooden items like the rotted frames of very large windows that I got free to install in the barn workshop. Once filled they are stronger than wood and impervious to weather for a long time. I have pumps that I occasionally use if I want perfect proportions. But I usually just slop some resin and hardener in approximate proportions into a mixing tray, and for mot purposes it works very nicely. The measurements would probably be more economical and perhaps produce a better finished product but for most jobs I don't bother. The pumps leak as temperature changes expand the pressure in the cans. A sturdy end cap on the pumps would help. I've tried electrical wire-nuts and they are marginally effective. The pumps are messy, and usually spend their time on essentially empty cans.
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