{"product_id":"west-system-655-c205b-fast-hardener-814ml","title":"West System 655-C205B Fast Hardener, 814 ml (27.5 oz.)","description":"\u003ch2\u003eWest System 655-C205B Fast Hardener, 814 ml (27.5 oz.)\u003c\/h2\u003e\u003cp\u003eThe 655-C205B is the larger-format version of the West System fast-cure epoxy hardener, designed for use with West System 105 Resin at a 5:1 mix ratio. It delivers the same rapid, rigid, moisture-resistant cure as the 208 ml size — with a pot life of 9–12 minutes at 22°C (72°F) — but in an 814 ml bottle suited to higher-volume repair work, production laminating, and shops that go through hardener regularly. The larger format reduces per-unit cost and the number of containers to manage on a busy workbench.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFast cure formulation — pot life of 9–12 minutes at 22°C (72°F)\u003c\/li\u003e\n\u003cli\u003eMix ratio: 5 parts 105 Resin to 1 part C205 Hardener by volume\u003c\/li\u003e\n\u003cli\u003eProduces a rigid, high-strength, moisture-resistant cured solid\u003c\/li\u003e\n\u003cli\u003eWell-suited to cool working conditions where slower hardeners may under-cure\u003c\/li\u003e\n\u003cli\u003e814 ml (27.5 oz.) bottle — economical format for regular or high-volume use\u003c\/li\u003e\n\u003cli\u003eCompatible with the West System 300 Mini Pump for accurate metered dispensing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e The C205B is the right choice for customers who already know they want the fast hardener and are doing enough work to justify the larger bottle — production shops, active boatyards, and technicians running multiple repair jobs. The fast cure makes it ideal for cool shop conditions (typically below 21°C \/ 70°F) where a slow hardener would extend cure time impractically. For customers who only need a small quantity or are trying the system for the first time, point them to the \u003ca href=\"\/products\/11131375648804\"\u003eWest System 655-C205A Fast Hardener, 208 ml (7 oz.)\u003c\/a\u003e instead. For jobs requiring longer working time — large pours, complex layups, or warm-weather work — recommend the \u003ca href=\"\/products\/11131376402468\"\u003eWest System 206 Slow Hardener\u003c\/a\u003e, the \u003ca href=\"\/products\/11131377483812\"\u003eC209SA Extra Slow Hardener\u003c\/a\u003e, or the \u003ca href=\"\/products\/11131377549348\"\u003eC209SB Extra Slow Hardener\u003c\/a\u003e. For a complete starter setup, the \u003ca href=\"\/products\/11131375583268\"\u003eWest System 655-C105K Fibreglass Boat Repair Kit\u003c\/a\u003e includes the fast hardener alongside resin, fillers, and glass tape.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51233005076516,"sku":"655-C205B","price":110.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/655-205B_17c852cd-160d-48c2-a194-01d027e6f876.jpg?v=1786152032","url":"https:\/\/marisolmarine.com\/products\/west-system-655-c205b-fast-hardener-814ml","provider":"Marisol Marine Company","version":"1.0","type":"link"}