Free Shipping on Orders of $149 or More.

Learn more
0 Cart Menu


West System is the industry standard epoxy for high-strength waterproof adhesives. There are three epoxy resin kits available.

The #205 fast-cure hardener has a working time of about 60 to 70 minutes at 70°F (20°C) with a minimum cure temperature of 40°F (4°C).

The #206 slow-cure hardener has a longer working time of 90 to 110 minutes at 70°F (20°C) with a minimum cure temperature of 60°F (16°C).

The #207 special coating hardener was developed for coating and fiberglass cloth application where an exceptionally clear, moisture-resistant, natural wood finish is desired. The 105/207 mixture resists clouding in humid conditions and has a low blush formation. Three coats or more can be applied in one day without additional surface preparation. The #207 working time is 110 to 130 minutes at 70°F (20°C) with a minimum cure temperature of 60°F (16°C).

The #105 epoxy resin is mixed in a 5:1 ratio with the #205 and #206 hardeners, and a 3:1 ratio with the #207 hardener to form a high-strength solid with excellent moisture resistance.

The curing time for maximum strength is 1-4 days for #205 and #206 hardeners, and 4-7 days for the #207.

The 5:1 kits contain 32 fl oz (946ml) of resin and 7 fl oz (207ml) of hardener, and the 3:1 kit contains 32 fl oz (946ml) of resin and 10.6 fl oz (310ml) of hardener. Kits include three dispensing pumps and a 30-page manual. Components are also available individually.

Thickeners for these mixtures are available separately.

Made in USA.

Related Products

Product Availability At All Stores


Item Added to your cart

{{ products.length }} Items Added to your cart

Items in your cart

Product Title



QTY: 0


Share On Facebook Share via Email


Sign In

User Name is a required field.

Password is a required field.

Forgot password?

Benefits of creating an account:

Create an account

Please enter the username associated with your Lee Valley account and we will send you an email to reset your password.