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Product Details

WEST System Epoxy cures to a high-strength plastic solid at room temperatures, by mixing specific proportions of liquid epoxy resin and hardener.

This clear, pale yellow, low-viscosity liquid epoxy resin is formulated for use with WEST SYSTEM hardeners. It can be cured in a wide temperature range to form a high-strength solid with excellent moisture resistance.

Designed specifically to wet out and bond with wood fiber, fiberglass, reinforcing fabrics and a variety of metals, 105 is an excellent adhesive that will bridge gaps and fill voids when modified with WEST SYSTEM fillers. It can be sanded and shaped when cured. In roller applications, it has excellent thin-film characteristics to flow out and self-level without fisheyeing. 105 resin has a relatively high flash point and no strong solvent odor, making it safer to work with than polyesters.

Tech Specs
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
Info & Guides
By using a simple "cookbook" approach you can tailor the handling characteristics and the physical properties of the cured epoxy to suit your working conditions and specific coating or bonding application.

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.

Reviews for WEST System 105 Epoxy Resin

10 of 112 Reviews

May 24, 2021

Product in the container was perfect, pump kit wouldn't fit.
By Zeb from Oklahoma

Verified Purchase

If the pump kit would screw in place on the container it would have been the perfect deal. Pump kit was for a smaller container obviously.

Bottom Line No, I would not recommend to a friend

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May 23, 2021

Good product, decent price
By Bryan from CT

Verified Purchase

The product worked as expected and the price seems fair compared to other brands

Bottom Line Yes, I would recommend to a friend

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November 18, 2020

I will buy this product again
By adwit from California

Verified Purchase

The setting time for this epoxy works well for my woodworking projects. Have tried a couple others with longer set times that result in failures.

Bottom Line Yes, I would recommend to a friend

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September 23, 2020

I will buy this product a lot for my business
By The maker from Williamsport pa

Verified Purchase

I Run a furniture repair/refinish shop and have used this epoxy to fix things that no other glue can do. I trust it to do what I need it to do.

Bottom Line Yes, I would recommend to a friend

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September 18, 2020

Have used multiple times and will buy again
By Michigan Mike from michigan

Verified Purchase

Works great and has many uses. Have used many projects and like to keep on hand

Bottom Line Yes, I would recommend to a friend

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July 26, 2020

I lii I ke products
By Mrstage from Marblehead ohio

Verified Purchase

Simple to use. Easy to dispense

Bottom Line Yes, I would recommend to a friend

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July 19, 2020

Very good product and fairly simple to use.
By Bart from Searcy, AR

Verified Purchase

I used this product to apply Kevlar skid plates to 2 Royalex canoes, bow and stern. I just followed the instructions and it was pretty simple to do. It washed off my hands fairly well with Dawn detergent.

Application of Kevlar on a Buffalo.
Bottom Line Yes, I would recommend to a friend

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June 25, 2020

I would buy this product again. Excellent service.
By Big Tater from Chicago

Verified Purchase

Building a WOOD canoe for the first time. Expoys worked very well. The staff was very helpful.

Bottom Line Yes, I would recommend to a friend

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June 18, 2020

Great product
By Brc from Seekonk, Ma

Verified Purchase

Always consistent

Bottom Line Yes, I would recommend to a friend

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May 27, 2020

As always , West is the best
By Jim from Lake Champlain, Vt

Verified Purchase

Used West 105 to seal the mahogany seats on my 41 yr old Boston Whaler.

Bottom Line Yes, I would recommend to a friend

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