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⏳ Slow cure, strong finish — because quality can’t be rushed!
West System 206-B Slow Hardener is a low-viscosity epoxy curing agent designed to pair with 105 Resin at a precise 5:1 ratio, delivering extended working time and superior bonding strength. Ideal for structural bonding, fiberglass applications, and fairing, it offers moisture resistance and can be customized with fillers and pigments. Not suitable for clear coating, this hardener is perfect for professionals seeking reliable, high-performance epoxy solutions that adapt to demanding conditions.















| Asin | B0002NY6SM |
| Best Sellers Rank | #81,816 in Automotive (See Top 100 in Automotive) #298 in Automotive Fillers, Adhesives & Sealants |
| Brand Name | West System |
| Compatible Material | Fiberglass |
| Container Type | Can |
| Customer Reviews | 4.7 4.7 out of 5 stars (302) 4.7 out of 5 stars |
| Global Trade Identification Number | 00811343010614 |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Weight | 2 Pounds |
| Material Type | Epoxy Resin |
| Model | 206-B |
| Number Of Pieces | 1 |
| Part Number | 206-B |
| Specific Uses For Product | Structural Bonding, Fairing, Coating, Fiberglass |
| Upc | 656166678852 811343010614 |
| Viscosity Level | Low |
| Volume | 814 Milliliters |
User
Great Product
Great Product
User
Pricey but the best material to work with
Nice to get it at home versus finding a West Marine supply store 2 hours away. As always, product does what it says it will and work s perfectly. Just you wish it was a little cheaper as the price seems a bit inflated but about the same that you would spend at a store.
User
Good Product,
Good Product, A++
User
Best option for typical applications
I use West Systems epoxy constantly. The slow hardener is the best overall option. It takes overnight to set up but you are rewarded with a super glue job. I use this with 105 rather than any aliphatic wood glues. Wood glues are only when I need something simple and fast like fixing a stripped screw hole.
User
FAST and low to NO Odor.
Woah, once I finally got the lid off, I didn’t notice any odor. I had some leftover resin from other kits that I ran out of hardener for and this is the ONLY company on Amazon that I could find to purchase just the hardener. Yes, I know that there’s no good reason to come up short on hardener, but anyway, a leaky pump that defied theLaws of physics was a culprit on top of mixing by weight instead of volume. When working with less than 20ml, it’s difficult to pour and I have yet To find a pump that’s able To Effectively Pump thick resin. Anyway, back to this product, it has a slightly amber tint that doesn’t really change any color additives I used but forget about true colorless clear casting. Fast! Very fast! I only had 18ml in med cup and it was cured in 15 minutes and yes, I mixed it correctly at 5:1. It was still tacky and solid. So, maybe 10:1 if you need more working time. That’s been an hour ago and it’s touchable and not even tacky.
Trustpilot
2 weeks ago
3 days ago