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Product Details

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.

Tech Specs
Mix Ratio, Resin:Hardener5:1 by weight or volume
Pot life at 72 F (22 C)20 to 25 minutes
Cure to a solid state9 to 12 hours
Cure to maximum strength1 to 4 days
Minimum recommended temperature60 F (16 C)
Pumps required300, 306-25 or 309

Reviews for WEST System 206 Slow Hardeners

10 of 20 Reviews

May 8, 2021

WebSite Picture Misleading - Caused Incorrect Order
By G Ag from Farmington, UT

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.

Bottom Line Yes, I would recommend to a friend

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July 16, 2020

strong bond
By jive from Vermont

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.

Bottom Line Yes, I would recommend to a friend

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January 29, 2020

West System slow hardener
By Chuck from Lawson, Missouri

Verified Purchase

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.

Bottom Line Yes, I would recommend to a friend

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March 8, 2019

GREAT SERVICE!
By Richard from Louisville, KY

Verified Purchase

Great Service, even for small orders!

Bottom Line Yes, I would recommend to a friend

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November 16, 2017

West System is great
By Hutch from Plainfield, Vermont

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.

Bottom Line Yes, I would recommend to a friend

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June 12, 2016

Good product
By Boatbuilder from Dubuque,Ia

Verified Purchase

Normally I prefer only Fast hardener, however, I had a rather large area of mat to wet out and anticipated warm weather ahead; so I purchased the Slow hardener. I did not realize the job would require so much resin and used up all the West System Resin that I had. My preference was to purchase Total Boat Resin because I've grown to like that product more than West; not to mention the money savings with free shipping for Total Boat. Instructions indicated I could use the two name brands together so I purchased Total Boat Resin and the West System slow hardener worked fine with the Total Boat Resin.

Bottom Line Yes, I would recommend to a friend

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December 2, 2015

Product good have used for a long time
By Larry from Western Colorado

Verified Purchase

We make walking sticks with brass tips and caps product works well, this order had shipping problems order on 11-10 got the product on 12-1

Bottom Line Yes, I would recommend to a friend

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April 29, 2015

Bad picture on website
By Tom from Far hills, NJ

Verified Purchase

the website shows the Qt. can so I ordered it.. when it came it was a cup. The picture should charge with the product.


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July 6, 2014

206 slow hardener
By BrightEyes from Guntersville, AL

Verified Purchase

The slow hardener provides plenty of working time in the 90 degree and 80% humidity environment I am currently working in. I always time my mixing to ensure thorough mix with resin. I am using straight mix for fiberglass layup using directions that are available from West Systems. I had colloidal filler for some smoothing fills. My choice of filler depends on strength vs ease of sanding. Mostly go with strength. With the slow hardener it gives me more working time so very little sanding is typically required. If I do miss a spot I use a grinder.

Bottom Line Yes, I would recommend to a friend

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January 20, 2014

Best two part adhesive
By Mattacme from Santa Rosa, CA

Verified Purchase

Be sure to use the metering pumps available for this and the resin.

Bottom Line Yes, I would recommend to a friend

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