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WEST SYSTEM 105 Epoxy Resin cures to a high-strength plastic solid at room temperatures, by mixing specific proportions of liquid epoxy resin and hardener. Formulated to work with WEST SYSTEM 205 Fast, 206 Slow, 207 Special, and 209 Tropical Hardeners. You can use this clear, low-viscosity liquid epoxy in a wide temperature range, starting at 40 F. Cure time ranges from 60 minutes to 4 hours based on the hardener used. The curing process forms a high-strength solid bond with excellent moisture resistance. See 'Data Sheets' for more information on usage.
Designed specifically to wet out and bond with wood fiber, composite materials like fiberglass, and reinforcing fabrics, and a variety of metals. Ideal for marine and boat repair applications.
105 is an excellent adhesive that will bridge gaps and fill voids when modified with WEST SYSTEM fillers. When cured, you can sand and shape the resin as needed. In roller applications, it has excellent thin-film characteristics to flow out and self-level without fish-eyeing. 105 resin has a relatively high flash point and no strong solvent odor, making it safer to work with than polyesters.
Available for purchase in 1 quart, .98 gallon, and 4.35 gallon sizes.
Group Size | Resin Quantity | Hardener Quantity | Mixed Quantity | Saturation Coat - Porous Surfaces | Build-Up Coats Non-porous Surfaces | Tensile Strength (PSI) |
---|---|---|---|---|---|---|
A | WSY 105A - 1 Qt. (.94 L) | 205A or 206A - .43 Pt. (.20 L) | 1.2 Qt. (1.15 L) | 90- 105 sq. ft. (8.5-10 sq. m) | 120-135 sq. ft. (11-12.5 sq. m) | 105/205 - 7,846, 105/206 - 7,320 |
A | WSY 105A - 1 Qt. (.94 L) | 207A or 209A - .66 Pt. (.31 L) | 1.3 Qt. (1.26 L) | 90-105 sq. ft. (9-10 sq. m) | 120-135 sq. ft. (11-13 sq. m) | 105/207 - 7,509, 105/209 - 7,338 |
B | WSY 105B - .98 Gal. (3.74 L) | 205B or 206B - .86 Qt. (.81 L) | 1.2 Gal. (4.55 L) | 350-405 sq. ft. (32-37 sq. m) | 462-520 sq. ft. (43-48 sq. m) | 105/205 - 7,846, 105/206 - 7,320 |
B | WSY 105B - .98 Gal. (3.74 L) | 207B or 209B - 1.32 Qt. (1.24 L) | 1.3 Gal. (4.98 L) | 370-430 sq. ft. (35-40 sq. m) | 490-550 sq. ft. (45-50 sq. m) | 105/207 - 7,509, 105/209 - 7,338 |
C | WSY 105C - 4.35 Gal. (16.47 L) | 205C or 206C - .94 Gal. (3.58 L) | 5.29 Gal. (20 L) | 1530-1785 sq. ft. (142-165 sq. m) | 2040-2300 sq. ft. (190-213 sq. m) | 105/205 - 7,846, 105/206 - 7,320 |
C | WSY 105C - 4.35 Gal. (16.47 L) | 207C or 209C - 1.45 Gal. (5.49 L) | 5.8 Gal. (21.9 L) | 1675-1955 sq. ft. (155- 180 sq. m) | 2235-2520 sq. ft. (207-233 sq. m) | 105/207 - 7,509, 105/209 - 7,338 |
1. Start with 105 Resin, the basic ingredient of all WEST SYSTEM epoxy compounds.
2. Mix with one of four WEST SYSTEM Hardeners. Select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working.
3. Add one of six WEST SYSTEM fillers to thicken the mixture as needed. Select a filler for its handling characteristics or cured physical properties. Or, add one of six WEST SYSTEM additives to provide specific coating properties.




