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West Systems 209SB Extra Slow Hardener, 0.33 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

209SB
06/04/2036 11:53 AM
Sale Price

$113.68

In Stock (10+)

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The West System 209SB Extra Slow Hardener is specifically formulated for use with 105 Resin in extremely warm and humid conditions. This professional-grade hardener is ideal for general bonding and coating applications where extended working time is critical for proper application and finishing.

Key Features:

  • Provides approximately twice the pot life and working time compared to 206 Slow Hardener
  • Maintains adequate pot life in temperatures up to 110°F
  • Specifically designed for extremely warm and humid environmental conditions
  • Compatible with West System 105 Resin for optimal performance
  • 0.33 gallon (quart) container size for convenient project use
  • Ideal for laminating, bonding, fairing, and barrier coating applications

This extra slow hardener is the preferred choice for professional boat builders, marine repair technicians, and composite fabricators working in hot climates or during summer months when standard hardeners cure too quickly. The extended working time allows for careful layup of large composite parts, meticulous surface coating, and complex bonding operations without rushing.

Applications: Marine construction and repair, fiberglass lamination, wood boat building, composite fabrication, structural bonding, and protective coating systems in warm weather conditions.

Products specifications

Capacity

0.33 Gallons

Type

Hardener

Best Use

Extra-Slow Hardener for 105 Epoxy Resin

Cure Time

20 to 24 Hours (Working Time 3-4 Hours) at 72 F

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