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West Systems 205C Fast Hardener 0.94 Gallon

Manufacturer

West Systems

<p>Founded in 1969 by brothers Meade, Joel, and Jan Gougeon in Bay City, Michigan, West System emerged from a shared passion for building sailboats and iceboats. What began as experiments with epoxy technology in the late 1950s evolved into a collaboration with chemists at Dow Chemical Company's epoxy lab, resulting in formulations that could serve as both adhesive and coating. The formulations developed became the basis of the WEST SYSTEM group of products introduced in 1971, revolutionizing wooden boat construction and marine bonding applications.</p><h3>Pioneering Marine Epoxy Technology</h3><p>West System Epoxy was created by Gougeon Brothers—sailors, builders and formulators who know the engineering and chemistry required for high-performance composite structures. In 1970, the brothers launched Adagio, the first large, all epoxy bonded and sealed wooden boat built without the use of fasteners, demonstrating the structural integrity their epoxy formulations could achieve. For over 50 years, WEST SYSTEM epoxy has been the marine industry's trusted brand for versatile, high-quality epoxy resin systems, expanding from marine applications to woodworking, composite construction, and general repair.</p><h3>Comprehensive Product Lineup</h3><p>The company's signature <a href="/7644-west-systems-west-system-products-201176">West System Products</a> include their renowned two-part epoxy systems featuring 105 Epoxy Resin paired with specialized hardeners, fillers, and additives. West System Epoxy is a versatile, high-quality, two-part epoxy easily modified for a wide range of coating and adhesive applications, especially suited for marine applications requiring superior moisture resistance and high strength. The modular system allows users to customize working time, cure characteristics, and physical properties by selecting different hardeners and incorporating various fillers for specific bonding, fairing, or filleting applications.</p><p>Beyond traditional epoxy resins, West System offers specialized solutions like <a href="/7644-west-systems-vinyl-sealant-repair-kit-19328">Vinyl Sealant Repair Kits</a> designed for quick repairs and sealing applications. The brand also provides an extensive selection of <a href="/7644-west-systems-maintenance-parts-accessories-200647">Maintenance Parts & Accessories</a> including metering pumps, mixing pots, application tools, and roller covers specifically engineered for epoxy work.</p><h3>Engineering Excellence and Quality Standards</h3><p>Not all epoxies are created equal—epoxy brands can vary widely in formulations, quality of raw materials, and suitability for marine environments, and it's much more difficult to balance all of the physical and mechanical properties necessary for a versatile, high-quality marine epoxy. West System epoxies are marine-grade and undergo rigorous testing to ensure their strength, making them suitable for applications ranging from boat building and repair to composite construction, woodworking, and structural bonding in demanding environments.</p><p>As an employee-owned, family run organization operating since 1969, West System maintains the same commitment to quality and innovation that drove the Gougeon brothers' original experiments. Their products bond tenaciously to wood, fiberglass, carbon fiber, metals, and many plastics, providing excellent moisture resistance and creating durable, long-lasting repairs and construction that withstand the harshest conditions.</p>

Part Number

205C
06/01/2036 2:49 AM
Sale Price

$216.09

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

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Product Details

The West System 205C Fast Hardener is a rapid-cure epoxy hardener designed for use with West System 105 Resin in a 5:1 mixing ratio. This formulation produces a rigid, high-strength, moisture-resistant epoxy system ideal for boat building, repairs, and composite fabrication where faster cure times are needed.

Key Features:

  • Fast cure time with 9-12 minute pot life at 72°F
  • Creates high-strength, moisture-resistant bonds when mixed with 105 Resin
  • 5:1 mixing ratio (5 parts resin to 1 part hardener)
  • Compatible with West System 300 Mini Pumps for accurate dispensing
  • 0.94 gallon (.66 gallon net weight) container size
  • Ideal for warmer temperatures or when faster production is required

This fast hardener is particularly useful in warm weather conditions or when working on projects requiring quick turnaround. The shorter pot life allows for faster cure and return to service, making it excellent for repair work and production environments. For best results, use the West System 300 Mini Pump Set to ensure proper 5:1 ratio mixing.

Products specifications

Capacity

0.94 Gallons

Type

Hardener

Best Use

Fast Hardener for 105 Epoxy Resin

Cure Time

6 to 8 Hours (Working Time 60-70 Minutes) at 72 F

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