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WEST SYSTEM
#205 Fast Hardener

205 Fast Hardener is formulated for general coating and bonding applications at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. Mixed with WEST SYSTEM 105 Resin at a 5:1 ratio, it forms a high-strength, moisture-resistant solid with excellent bonding and barrier coating properties. Not intended for clear coating.

  • 205-A size Hardener should be paired with 105-A size Resin.
  • 205-B size Hardener should be paired with 105-B size Resin.
  • 205-C size Hardener should be paired with 105-C size Resin.

User Manual

 

Product Models
Description WM Model # MFG Part # Availability Price Quantity  
205-A Fast Hardener, 0.44 pint 318360 205-A
In stock online.

$22.99

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#205-B Fast Hardener, 0.86qt. 318378 205-B
In stock online.

$49.99

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205-C Fast Hardener, 0.94 gallon 323741 205-C
In stock online.

$159.99

Add to My List
205-E Fast Hardener, 11.31 gallon 326108 205-E-12
In stock online.

$1,199.99

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Product Description

205 Fast Hardener is formulated for general coating and bonding applications at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. Mixed with WEST SYSTEM 105 Resin at a 5:1 ratio, it forms a high-strength, moisture-resistant solid with excellent bonding and barrier coating properties. Not intended for clear coating.

  • 205-A size Hardener should be paired with 105-A size Resin.
  • 205-B size Hardener should be paired with 105-B size Resin.
  • 205-C size Hardener should be paired with 105-C size Resin.

User Manual

 

Specs

REVIEW SNAPSHOT®

by PowerReviews
West System#205 Fast Hardener
 
4.8

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (12)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (14)
  • Protects well (11)
  • Weather proof (10)
  • Visually pleasing (6)

Cons

No Cons

Best Uses

  • Outdoors (8)
  • Quick fix (7)
  • Indoor (5)
  • Wood trim (5)
    • Reviewer Profile:
    • Casual/ recreational (6), Advanced (5)
    • Was this a gift?:
    • No (9)

Reviewed by 15 customers

Displaying reviews 1-10

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5.0

as expected.... tried and true product

By Don

from Massachusetts

About Me Casual/ Recreational

Verified Buyer

Pros

  • Easy to Use

Cons

    Best Uses

      Comments about #205 Fast Hardener:

      used to repair bulkhead in 25' Oday sailboat

      • Was this a gift?:
      • No
       
      5.0

      Excellent product for all types of repairs.

      By Ss

      from Knoxville, tn

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy to Use

      Cons

        Best Uses

        • Indoor
        • Outdoor
        • Quick Fix
        • Wood Trim

        Comments about #205 Fast Hardener:

        Use it for hull repairs

        • Was this a gift?:
        • No
         
        5.0

        I do buy this product time and time again

        By -

        from Sebastian, FL

        About Me Advanced

        Verified Buyer

        Pros

        • Easy to Use
        • Protects Well
        • Weather Proof

        Cons

          Best Uses

            Comments about #205 Fast Hardener:

            I use this product for jobs that either need a quick set time or when it is cold weather her in Florida.

            Service and delivery comments:

            The tiny store here in Vero Beach is always great help with service and tips on DIY projects

            • Was this a gift?:
            • No
             
            5.0

            Very good produce.

            By Dan

            from Auburn, MI

            About Me Professional

            Verified Buyer

            Pros

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

            Cons

              Best Uses

              • Outdoor
              • Quick Fix
              • Wood Trim

              Comments about #205 Fast Hardener:

              I make combat weathervanes, which are world war planes, like Mustangs and Corsairs and others. They out in the weather all time. West System holds up great on my planes. Its easy to work with, it sands down great. I highly recommend West System.

              • Was this a gift?:
              • No
               
              5.0

              An excellent product for general fiberglass work

              By Capitan Tango

              from Houston, TX

              About Me Advanced

              Verified Buyer

              Pros

              • Easy to Use
              • Protects Well
              • Weather Proof

              Cons

                Best Uses

                • Outdoor
                • Quick Fix

                Comments about #205 Fast Hardener:

                Used it below the waterline to cover two no-longer-used through-hull holes (with appropriate fiberglass). I had no trace of any problem after 2 years constantly in the water. Invisible from the outside or inside after sanding and painting.

                • Was this a gift?:
                • No
                 
                5.0

                happy customer

                By josh

                from brooklyn ny

                About Me Casual/ Recreational

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Outdoor
                  • Quick Fix
                  • Wood Trim

                  Comments about #205 Fast Hardener:

                  great results

                  • Was this a gift?:
                  • No
                   
                  5.0

                  Great for cooler weather, yet still had good working time

                  By fourwhitesocks

                  from La Salle, Mi

                  About Me Casual/ Recreational

                  Verified Buyer

                  Pros

                  • Easy to Use

                  Cons

                    Best Uses

                      Comments about #205 Fast Hardener:

                      Filling holes for rebedding sailboat deck hardware

                       
                      4.0

                      Yes

                      By None

                      from Corunna mi 48817

                      About Me Advanced

                      Verified Buyer

                      Pros

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

                      Cons

                        Best Uses

                        • Indoor

                        Comments about #205 Fast Hardener:

                        Working on boats& cars

                        Service and delivery comments:

                        Yes

                        • Was this a gift?:
                        • No
                         
                        5.0

                        work

                        By dust

                        from 49620

                        Verified Buyer

                        Comments about #205 Fast Hardener:

                        Just good stuff

                         
                        5.0

                        205-B

                        By Jim

                        from Hubert, NC

                        About Me Casual/ Recreational

                        Verified Buyer

                        Pros

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

                        Cons

                          Best Uses

                            Comments about #205 Fast Hardener:

                            Performs awesomely when mixed with 105 Resin.

                            • Was this a gift?:
                            • No

                            Displaying reviews 1-10

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