--- product_id: 626122165 title: "West System 206-B 206B Slow Hardener - .81.4l" brand: "west system" price: "¥26926" currency: JPY in_stock: true reviews_count: 5 category: "West System" url: https://www.desertcart.jp/products/626122165-west-system-206-b-206b-slow-hardener-81-4l store_origin: JP region: Japan --- # Extended working time High-strength cured bond Stable at higher temps West System 206-B 206B Slow Hardener - .81.4l **Brand:** west system **Price:** ¥26926 **Availability:** ✅ In Stock ## Summary > ⏳ Slow cure, fast results — master your craft with precision! ## Quick Answers - **What is this?** West System 206-B 206B Slow Hardener - .81.4l by west system - **How much does it cost?** ¥26926 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/626122165-west-system-206-b-206b-slow-hardener-81-4l) ## Best For - west system enthusiasts ## Why This Product - Trusted west system brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Low Viscosity Formula:** Smooth application for superior coating and bonding - • **Precision 5:1 Mix Ratio:** Optimized resin-to-hardener balance for flawless curing - • **Versatile Customization:** Easily modified with fillers, pigments & additives to match any project - • **Moisture-Resistant Durability:** Ensures long-lasting structural integrity in demanding environments - • **Perfect for Fiberglass & Structural Bonding:** Trusted by pros for fairing, coating, and tough repairs ## Overview West System 206-B Slow Hardener is a low-viscosity epoxy curing agent designed to extend working time when paired with 105 Resin at a 5:1 ratio. It delivers a rigid, moisture-resistant, high-strength bond ideal for fiberglass, structural bonding, fairing, and coating applications, especially in higher temperature conditions. Not suitable for clear coating. ## Description 206 Slow Hardener is a low-viscosity epoxy curing agent for use with WEST SYSTEM 105 Resin when extended working and cure time is needed or to provide adequate working time at higher temperatures. 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. 206 B size hardener is matched for use with 105 B size resin. Review: Great Product - Great Product Review: 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. ## Features - PAIR WITH 105-B WEST SYSTEM 105 Epoxy Resin at a 5-parts resin to 1-part hardener ratio. - EASILY MODIFIED with WEST SYSTEM Fillers, Additives, and Pigments to suit the job at hand, whether coating, applying fiberglass, structural bonding, or fairing. Not intended for clear coating. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002NY6SM | | Best Sellers Rank | #87,338 in Automotive ( See Top 100 in Automotive ) #313 in Automotive Fillers, Adhesives & Sealants | | Brand | West System | | Brand Name | West System | | Compatible Material | Fiberglass | | Container Type | Can | | Customer Reviews | 4.7 out of 5 stars 305 Reviews | | Global Trade Identification Number | 00811343010614 | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Weight | 907 g | | Item form | Liquid | | Item package quantity | 1 | | Material | Epoxy Resin | | Material Type | Epoxy Resin | | Model | 206-B | | Number of Pieces | 1 | | Package information | Can | | Part Number | 206-B | | Specific Uses For Product | Structural Bonding, Fairing, Coating, Fiberglass | | Specific uses for product | Structural Bonding, Fairing, Coating, Fiberglass | | UPC | 656166678852 811343010614 | | Viscosity Level | Low | | Volume | 814 Milliliters | ## Product Details - **Brand:** West System - **Item form:** Liquid - **Item package quantity:** 1 - **Material:** Epoxy Resin - **Specific uses for product:** Structural Bonding, Fairing, Coating, Fiberglass ## Images ![West System 206-B 206B Slow Hardener - .81.4l - Image 1](https://m.media-amazon.com/images/I/817fw5Ge1aL.jpg) ![West System 206-B 206B Slow Hardener - .81.4l - Image 2](https://m.media-amazon.com/images/I/81ZnL4CXwaL.jpg) ## Questions & Answers **Q: coverage in sq. ft. ?** A: I would go to West Systems web site. I think you will get a idea of coverage there. **Q: Can i use this to paste wood to Concrete ?** A: I have not used it for that. There are a bunch of products on the market that are made to glue wood to concrete. Check with your local building supply store. My understanding is that this West product is for fiberglass to fiberglass ,wood to wood ect. **Q: i bought the 105 and 206 with pumps as set. reading further i dont know if i got the correct products. using on reclaimed pine flooring. any opinions?** A: it works fine for filling voids in wood slabs but it is not a finishing product **Q: How much VOC is there in this product?** A: Hello Adu. There are 9.59 g/L (0.08 lb/gal) of VOC's in the combined resin/hardener system of 105/206. More information can be found on our safety data sheet here https://www.westsystem.com/206-slow-hardener/ ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product *by J***S on 12 December 2024* Great Product ### ⭐⭐⭐⭐⭐ Pricey but the best material to work with *by O***S on 11 June 2025* 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. ### ⭐⭐⭐⭐⭐ Good Product, *by A***R on 22 December 2025* Good Product, A++ ## Frequently Bought Together - West System 206-B Slow Hardener - West System 105-B Epoxy Resin - WEST SYSTEM 300 Mini Pump Set --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/626122165-west-system-206-b-206b-slow-hardener-81-4l](https://www.desertcart.jp/products/626122165-west-system-206-b-206b-slow-hardener-81-4l) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-12*