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WEST SYSTEM
#105 Epoxy Resin

A clear, low-viscosity, liquid epoxy resin, formulated for use with any one of four WEST SYSTEM hardeners. Cures in a wide temperature range to form a high-strength solid with excellent moisture resistance. When mixed at the proper ratio with WEST SYSTEM 205 Fast Hardener, 206 Slow Hardener, 207 Special Clear or 209 Extra Slow Hardeners, it is an excellent adhesive. It is designed specifically to wet out and bond to wood fiber, fiberglass, reinforcing fabrics, foam or other composite materials, and a variety of metals. 105 Resin-based epoxy will bridge gaps and fill voids when modified with WEST SYSTEM Fillers, and can be sanded and shaped when cured. With roller applications, it has excellent thin film characteristics, allowing it to flow out and self-level without fish-eyeing. Multiple coats of a 105-based epoxy create a superior moisture barrier and a tough, stable base for paints and varnishes. 105 Resin is formulated without volatile solvents and does not shrink after curing. It has a relatively high flash point and no strong solvent odor, making it safer to work with than polyester or vinylester resins. Resin viscosity is approximately 1000 centipoise at 72F (22C).

  • 105-A size Resin should be paired with an A-size container of 205, 206, 207 or 209 Hardener.
  • 105-B size Resin should be paired with a B-size container of 205, 206, 207 or 209 Hardener.
  • 105-C size  Resin should be paired with a C-size container of 205, 206, 207 or 209 Hardener.
  • 105-E size Resin should be paired with an E-size container of 205, 206, 207 or 209 Hardener.

Product Selection Guide

It is strongly recommended to use WEST SYSTEM dispenser pumps with these products.

Product Models
Description WM Model # MFG Part # Availability Price Quantity  
#105 Epoxy Resin, Quart 323733 105-A
In stock online.

$46.99

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#105 Epoxy Resin, Gallon 318352 105-B
In stock online.

$99.99

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#105 Epoxy Resin, 4.35 Gallons 323725 105-C
In stock online.

$359.99

Add to My List
#105 Epoxy Resin, 52.03 Gallons 326090 105-E
Ships when available.

$3,119.99

Add to My List

Product Description

A clear, low-viscosity, liquid epoxy resin, formulated for use with any one of four WEST SYSTEM hardeners. Cures in a wide temperature range to form a high-strength solid with excellent moisture resistance. When mixed at the proper ratio with WEST SYSTEM 205 Fast Hardener, 206 Slow Hardener, 207 Special Clear or 209 Extra Slow Hardeners, it is an excellent adhesive. It is designed specifically to wet out and bond to wood fiber, fiberglass, reinforcing fabrics, foam or other composite materials, and a variety of metals. 105 Resin-based epoxy will bridge gaps and fill voids when modified with WEST SYSTEM Fillers, and can be sanded and shaped when cured. With roller applications, it has excellent thin film characteristics, allowing it to flow out and self-level without fish-eyeing. Multiple coats of a 105-based epoxy create a superior moisture barrier and a tough, stable base for paints and varnishes. 105 Resin is formulated without volatile solvents and does not shrink after curing. It has a relatively high flash point and no strong solvent odor, making it safer to work with than polyester or vinylester resins. Resin viscosity is approximately 1000 centipoise at 72F (22C).

  • 105-A size Resin should be paired with an A-size container of 205, 206, 207 or 209 Hardener.
  • 105-B size Resin should be paired with a B-size container of 205, 206, 207 or 209 Hardener.
  • 105-C size  Resin should be paired with a C-size container of 205, 206, 207 or 209 Hardener.
  • 105-E size Resin should be paired with an E-size container of 205, 206, 207 or 209 Hardener.

Product Selection Guide

It is strongly recommended to use WEST SYSTEM dispenser pumps with these products.

Specs

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REVIEW SNAPSHOT®

by PowerReviews
West System#105 Epoxy Resin
 
4.9

(based on 85 reviews)

Ratings Distribution

  • 5 Stars

     

    (76)

  • 4 Stars

     

    (9)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (73)
  • Protects well (54)
  • Weather proof (52)
  • Visually pleasing (40)
  • Durable (3)

Cons

  • Messy (5)

Best Uses

  • Outdoors (48)
  • Wood trim (30)
  • Quick fix (28)
  • Indoor (26)
    • Reviewer Profile:
    • Advanced (29), Casual/ recreational (25), Professional (16), Beginner (8)
    • Was this a gift?:
    • No (50)

Reviewed by 85 customers

Displaying reviews 1-10

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5.0

west system resin is easy to work with

By mikembs

from Bothell Wa

About Me Casual/ Recreational

Verified Buyer

Pros

  • does not stink
  • Easy to Use
  • Protects Well
  • Visually Pleasing
  • Weather Proof

Cons

    Best Uses

    • lay up fiberglass
    • seals wood bulkhead

    Comments about #105 Epoxy Resin:

    i used west systems resin to rebuild a bulkhead in my boat. this stuff is easy to work with and easy to mix due to the pump system they have. i will be using this again on my boat.

    • Was this a gift?:
    • No
     
    5.0

    Good stuff

    By Scotster

    from Lawndale ca

    About Me Advanced

    Verified Buyer

    Pros

    • Easy to Use

    Cons

      Best Uses

        Comments about #105 Epoxy Resin:

        Easy to use this system

         
        5.0

        Best epoxy around. Will buy again.

        By Mark

        from Key West, FL

        About Me Advanced

        Verified Buyer

        Pros

        • Easy to Use
        • Weather Proof

        Cons

        • Messy

        Best Uses

        • Boats
        • Outdoor

        Comments about #105 Epoxy Resin:

        I used this epoxy on a fence to keep the 2x4's in place in the notches of the 6x6 posts. I also used lag bolts but the epoxy is a great adhesive and gap filler that will last.

        • Was this a gift?:
        • No
         
        5.0

        Go West MY Friend, You won't Regret it. Easy to use, STRONG.

        By Cole

        from Little River, S.C.

        About Me Professional

        Verified Buyer

        Pros

        • Easy to Use
        • Protects Well
        • Visually Pleasing
        • Weather Proof

        Cons

          Best Uses

          • Outdoor
          • Quick Fix

          Comments about #105 Epoxy Resin:

          I had a crack in my glass under my battery boxes, turned out the underlayment was rotted. I tore out the bad wood and replaced it with fiberboard covered by the WEST SYSTOM, it was so easy to use I built Custom battery boxes with the excess product.

          • Was this a gift?:
          • No
           
          5.0

          I have been using West Systems epoxy since about 1988.

          By Pete

          from Carlsbad CA

          About Me Professional

          Verified Buyer

          Pros

          • Easy to Use
          • Protects Well
          • Visually Pleasing
          • Weather Proof

          Cons

          • Difficult to Use

          Best Uses

          • Outdoor
          • Quick Fix

          Comments about #105 Epoxy Resin:

          Over the years I have used more than 100 gallons
          Mix well, then mix some more.

          • Was this a gift?:
          • No
           
          5.0

          It is great to work with no matter what size the batch.

          By Mike

          from Parkdale, ore

          Verified Buyer

          Pros

          • Easy to Use

          Cons

            Best Uses

              Comments about #105 Epoxy Resin:

              Boat repair and construction

              • Was this a gift?:
              • No
               
              5.0

              I plan on using this product exclusively

              By Fqi

              from New orleans

              About Me Professional

              Verified Buyer

              Pros

              • Easy to Use
              • Price point is perfect for me
              • Protects Well
              • Visually Pleasing
              • Weather Proof

              Cons

                Best Uses

                • Wood furniture
                • Wood Trim

                Comments about #105 Epoxy Resin:

                I use this product in filling large voids in wood. I am a professional furniture maker

                • Was this a gift?:
                • No
                 
                5.0

                Best epoxy resin

                By Luo

                from Arecibo Puerto Rico

                About Me Casual/ Recreational

                Verified Buyer

                Pros

                • Easy to Use
                • Protects Well
                • Visually Pleasing
                • Weather Proof

                Cons

                • Non

                Best Uses

                • Indoor
                • Outdoor
                • Quick Fix
                • Wood Trim

                Comments about #105 Epoxy Resin:

                It's my 2nd gallon I have bought in the last year. Very happy with the result

                • Was this a gift?:
                • No
                 
                5.0

                resin

                By dan

                from san diego

                About Me Casual/ Recreational

                Verified Buyer

                Pros

                • Easy to Use
                • Protects Well
                • Visually Pleasing
                • Weather Proof

                Cons

                  Best Uses

                  • Outdoor

                  Comments about #105 Epoxy Resin:

                  been working on transom. use to be a structural ship fitter for the navy. used to work with metal. this is very similar. project is coming along nicely

                  • Was this a gift?:
                  • No
                   
                  5.0

                  This product is easy to mix exact amount Of any size.

                  By bigcanoe

                  from Parkdale, Oregon

                  About Me Advanced

                  Verified Buyer

                  Pros

                  • Easy to Use
                  • Protects Well

                  Cons

                    Best Uses

                    • Outdoor
                    • Quick Fix

                    Comments about #105 Epoxy Resin:

                    I use this product for boat building and repair.

                    • Was this a gift?:
                    • No

                    Displaying reviews 1-10

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