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Product Details

Our West System Epoxy kit contains everything you need to tackle epoxy repairs and fiberglassing projects. Each kit includes a gallon of West System 105 resin (105B, .98 gal), 205B (fast) or 206B (slow) hardener, mixing pumps, 6 ounce fiberglass cloth, mixing sticks, the official West System user manual, and the West Fiberglass Restoration book.

205 fast hardener is used primarily in cooler temps or for a more rapid cure. 206 slow hardener is used in warmer temps or when more work time is needed.

The Gougeon Brothers (founders of WEST) have been producing an effective epoxy for boat building and woodworking for over 35 years. While items may also be purchased separately, purchasing the complete kit saves time and money.

Tech Specs
105 Fast Kit (205 Hardener) 105 Slow Kit (206 Hardener)
Mixed Quantity 1.2 Gal. (4.55 L)1.2 Gal. (4.55 L)
Saturation Coat - Pourous Surfaces 350-405 sq. ft. (32-37 sq. m)350-405 sq. ft. (32-37 sq. m)
Build-Up Coats - Non-Pourous Surfaces 462-520 sq. ft. (43-48 sq. m)462-520 sq. ft. (43-48 sq. m)
Pot Life at 72 F (22 C) 9 to 12 mins.20 to 25 mins.
Cure to a solid state 6 to 8 hours9 to 12 hours
Cure to maximum strength 1 to 4 days1 to 4 days
Minimum recommended temperature 40 F (4 C)60 F (16 C)
Mix Viscosity at 72 F (cPs)975725
Specific Gravity of Cured Resin 1.1801.180
Compression Yield at 1 day (PSI) 10,1207,990
Compression Yield at 2 weeks (PSI) 11,41811,500
Tensile Strength (PSI) 7,8467,320
Tensile Elongation (%) 3.44.5
Tensile Modulus (PSI) 4.08E+054.60E+05
Flexural Strength (PSI) 14,11211,810
Flexural Modulus (PSI) 4.61E+054.50E+05
Heat Deflection Temperature (F) 118123
Onset of Tg by DSC (F) 129126
Ultimate Tg by DSC (F) 142139
Izod Impact, notched (ft.-lbs./in.) 0.930.54
Info & Guides


Both epoxy kits come with the WSY-300 standard plunger pump, but are compatible with the 306-25 and 309 Pumps. The Resin to Hardener ratio for the 105B Kits is 5:1 by either weight or volume. When combined with 105 Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. These kits are not intended for clear coating.
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