West System

West System 105 Epoxy Resin

West System 105 Epoxy Resin

SKU:SWES-105-A

Regular price $51.47 USD
Sale price $51.47 USD Regular price $59.19 USD
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108 in stock

Size: 105-A -- 1 Quart
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West System 105 Epoxy Resin, a trusted product in the marine industry since the 1980s, is renowned for its exceptional bonding and adhesive properties. With unparalleled strength, it is a top choice for its versatility in adhering to various surfaces such as metal, wood, and fiberglass. As a premier adhesive manufacturer, West System has been dedicated to supporting boaters since its establishment in 1969. In addition to their variety of epoxy compounds, their products are also known for their reliability and effective results.

  • Resin Type: Bisphenol-A epoxy
  • Mix Ratio:
  • 5:1 by volume with 205 Fast or 206 Slow Hardeners
  • 3:1 by volume with 207 Special Clear or 209 Extra Slow Hardeners
  • Color: Clear to pale amber
  • Viscosity: 600 cps at 72°F (room temperature)
  • Cure Time: Depends on hardener used (see individual hardener specs)
  • Pot Life (100g batch at 72°F):
  • With 205 Fast: ~10–15 minutes
  • With 206 Slow: ~20–25 minutes
  • Coverage: Approximately 12 square feet per mixed pint at 1/8" thickness

Shelf Life: 1+ year (unopened, stored between 60°F–90°F)

  • Versatile application – Ideal for bonding, laminating, coating, sealing, fairing, and molding
  • Moisture and chemical resistance – Forms a waterproof barrier for long-term durability in marine environments
  • Low viscosity – Easily wets out fiberglass cloth, carbon fiber, and wood
  • Blush-free finish with 207/209 hardeners – For clear coating and brightwork
  • Adjustable working time – Choose from multiple hardeners to fit temperature and project size
  • Compatible fillers – Blend with West System fillers for tailored performance (fairing, structural, gap-filling)
  • Strong mechanical properties – Excellent adhesion, tensile strength, and impact resistance
  • Trusted by professionals – Used in both commercial and DIY boat construction worldwide
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Choose based on temperature, working time, and project type:

  • Best for cool temperatures or quick repairs.
  • Ideal for general use in moderate to warm temps.
  • For clear finishes and brightwork.
  • Best for hot climates and large laminations.

It depends on your application:

  • High-strength bonding
  • Structural bonding
  • Fairing (easy sanding)
  • Ultra-lightweight fairing