{"product_id":"west-system-c205-fast-hardener-3-56-l-94-gal","title":"West System C205 Fast Hardener – 3.56 L (0.94 Gal)","description":"\u003ch2\u003eFast-Cure Epoxy Hardener for Structural Marine Applications\u003c\/h2\u003e\u003cp\u003eThe C205 Fast Hardener is designed for use with West System 105 Epoxy Resin in a 5:1 mix ratio, producing a rigid, high-strength, moisture-resistant bond with a short pot life. At 3.56 L (0.94 Gal), this large-format container is well-suited for boatbuilders, repair yards, and serious DIYers working on high-volume projects where fast turnaround between coats or laminations is a priority.\u003c\/p\u003e\u003cp\u003eWith a pot life of approximately 9–12 minutes at 22°C (72°F), C205 is the go-to hardener when working in cooler conditions or when a quick cure cycle is needed. It cures to a clear, hard finish compatible with most marine topcoats and finishes.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFast cure cycle — pot life of 9–12 minutes at 22°C (72°F)\u003c\/li\u003e\n\u003cli\u003e5:1 mix ratio with West System 105 Epoxy Resin\u003c\/li\u003e\n\u003cli\u003eProduces a rigid, high-strength, moisture-resistant solid\u003c\/li\u003e\n\u003cli\u003eIdeal for cooler working conditions or when fast recoat times are needed\u003c\/li\u003e\n\u003cli\u003e3.56 L (0.94 Gal) bulk size — suited for large or ongoing projects\u003c\/li\u003e\n\u003cli\u003eCompatible with West System 300 Mini Pumps for accurate metering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFiberglass laminating and hull repairs\u003c\/li\u003e\n\u003cli\u003eWood sheathing and encapsulation\u003c\/li\u003e\n\u003cli\u003eStructural bonding of marine components\u003c\/li\u003e\n\u003cli\u003eCoating and sealing in cooler shop or on-water conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Sizes\u003c\/h3\u003e\u003cp\u003eAlso available in smaller formats: \u003ca href=\"\/products\/west-system-c205-hardener-208-ml-7-oz\"\u003eWest System C205 Hardener, 208 ml (7 oz.)\u003c\/a\u003e and \u003ca href=\"\/products\/west-system-c205-hardener-814-ml-27-5-oz\"\u003eWest System C205 Hardener, 814 ml (27.5 oz.)\u003c\/a\u003e. For extended working time, consider the \u003ca href=\"\/products\/west-system-206-slow-hardener-0-86-qt-c206b\"\u003eWest System 206 Slow Hardener\u003c\/a\u003e or the \u003ca href=\"\/products\/west-system-c209sc-extra-slow-hardener-5-3-l-1-4-gallon\"\u003eWest System C209SC Extra Slow Hardener\u003c\/a\u003e. Pair with \u003ca href=\"\/products\/west-system-c105b-resin-3-74-l-98-gal\"\u003eWest System C105B Resin – 3.74 L\u003c\/a\u003e for a closely matched volume pairing.\u003c\/p\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e C205 is the right hardener for customers working in cooler temperatures (below 21°C \/ 70°F) or anyone who needs fast recoat times and doesn't require extended working time. It's the most commonly stocked hardener for general marine repair and laminating work. Steer customers toward the 206 Slow Hardener if they're working in warm conditions, doing large pours, or are newer to epoxy work and need more time to wet out fabric. The 3.56 L size pairs well with the C105B or C105C resin jugs for high-volume jobs. Remind customers to use the 300 Mini Pumps for accurate 5:1 metering — eyeballing the ratio is a common source of cure failures.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51233005305892,"sku":"655-C205C","price":313.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/655-205B_efd02760-0ee4-4474-874d-45e238e77b31.jpg?v=1786152035","url":"https:\/\/marisolmarine.com\/products\/west-system-c205-fast-hardener-3-56-l-94-gal","provider":"Marisol Marine Company","version":"1.0","type":"link"}