{"product_id":"west-system-epoxy-resin-and-hardener-105-205-a-pack-marine-grade-a","title":"WEST SYSTEM Marine Grade Epoxy Resin and Hardener 105\/205 A Pack","description":"\u003cdiv class=\"aplus-v2 desktop celwidget\" style=\"display: block; margin-left: auto; margin-right: auto; max-width: 970px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; word-wrap: break-word; overflow-wrap: break-word; line-height: 1.6; color: #333333;\"\u003e\n\u003cp\u003e\u003cstrong\u003eWEST SYSTEM 105 Epoxy Resin with 205 Fast Hardener\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMarine grade epoxy resin\u003c\/strong\u003e trusted across composite repair for decades, from marine hulls to homebuilt airframes. Supplied by \u003cstrong\u003eJHEARs Aerospace\u003c\/strong\u003e, this high-strength liquid epoxy system is engineered for structural bonding, fiberglass repair, and fairing modifications. Pairing the industry-standard 105 resin with the 205 fast hardener provides rapid curing characteristics, giving you a working time perfectly suited to smaller repairs and assembly jobs where you want the piece handleable sooner rather than waiting overnight.\u003c\/p\u003e\n\u003cp\u003eFormulated without volatile solvents, this professional-grade system cures to a high-strength, moisture-resistant solid that bonds exceptionally well to wood, fiberglass, reinforcing fabrics, carbon fiber, and a variety of metals. It easily wets out fiberglass cloths and carbon fibers, filling surface voids and creating an impenetrable moisture barrier. Its predictable cure profile at standard shop temperatures makes it a dependable baseline standard for critical aerospace and structural workshops that refuse to compromise on joint integrity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e WEST SYSTEM 105-B resin, 205-A fast hardener. Mix ratio is 5 parts resin to 1 part hardener by weight\/volume. Pot life at 22°C (72°F) is roughly 10 to 15 minutes, curing to a solid state within 5 to 7 hours.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWho this is for:\u003c\/strong\u003e engineers and builders doing composite repair on fiberglass, wood, and fairing work, homebuilt aircraft owners handling their own structural repairs, and flight schools maintaining composite trainer components where a rapid, dependable cure cycle saves valuable maintenance time.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.3em; margin-top: 30px; margin-bottom: 15px; border-bottom: 1px solid #ddd; padding-bottom: 5px; color: #111111;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does it take for this WEST SYSTEM mix to cure?\u003c\/strong\u003e\u003cbr\u003eAt standard shop temperatures of 22°C (72°F), the 105 Resin and 205 Fast Hardener mix provides a working time (pot life) of 10 to 15 minutes. It hardens into a workable solid in roughly 5 to 7 hours, and achieves a full structural cure within 1 to 2 days.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is marine epoxy resin?\u003c\/strong\u003e\u003cbr\u003eMarine epoxy resin is a moisture-resistant epoxy system designed for bonding, coating, and repairing boats, fiberglass, and other composite surfaces where strength and water resistance matter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between marine epoxy and regular epoxy?\u003c\/strong\u003e\u003cbr\u003eMarine epoxy is typically formulated for better moisture resistance and structural bonding in wet or high-humidity environments, while regular epoxy is often used for general-purpose applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs WEST SYSTEM Epoxy good for aviation repairs?\u003c\/strong\u003e\u003cbr\u003eYes, WEST SYSTEM epoxy is a trusted marine and aerospace-grade system widely utilized for structural wood bonding, fiberglass laminate repair, and general composite fairing work on homebuilt and experimental aircraft due to its immense physical strength and moisture resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I apply gel coat over cured WEST SYSTEM Epoxy?\u003c\/strong\u003e\u003cbr\u003eCompatibility depends entirely on surface preparation. Before applying a gel coat or paint system, ensure the epoxy is fully cured, wash away any amine blush residue with clean water, and sand the surface thoroughly to ensure a strong physical bond. Follow the gel coat manufacturer's instructions closely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy should I purchase my composite shop supplies from JHEARs Aerospace?\u003c\/strong\u003e\u003cbr\u003eAt \u003cstrong\u003eJHEARs Aerospace\u003c\/strong\u003e, we guarantee fresh, properly stored chemical inventory with strict batch traceability. We ensure that our resins and hardeners are kept in optimal climate-controlled environments so they deliver consistent, full-strength performance right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Jhears Aero","offers":[{"title":"Default Title","offer_id":54751393612105,"sku":"492d83dff5160856c0188bf9","price":74.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/5770\/5801\/files\/105-B-e1683313945756.png?v=1788023169","url":"https:\/\/www.jhears.com\/products\/west-system-epoxy-resin-and-hardener-105-205-a-pack-marine-grade-a","provider":"Jhears Aero","version":"1.0","type":"link"}