Skip to content Skip to navigation menu

WEST SYSTEM #209 Extra Slow Hardener

209 Extra Slow Hardener is formulated for use with WEST SYSTEM Brand 105 Resin for general coating and bonding applications in extremely warm and/or humid conditions or when extended working time is desired at room temperature. Provides approximately twice the working time of 206 Slow Hardener. Forms a clear, amber-colored solid with good physical properties and moisture resistance for bonding and coating applications. Not intended for clear coating.

  • Mini Pump Kit is a must for precise metering of all group sizes of WEST SYSTEM resins and hardeners
Mix Ratio, Resin:Hardener
Pot life at 72°F (22°C)
at 95°F (35°C)
Cure to a solid state at 72°F (22°C)
at 95°F (35°C)
Cure to maximum strength at 72°F
Minimum recommended temperature
Pumps
3:1 by volume (3.5:1 by weight)*
40 to 50 minutes
15 to 20 minutes
20 to 24 hours
6 to 8 hours
4 to 9 days
70°F (21°C)
300, 306-23 or 309-3
       
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
#209-SA Extra Slow Hardener, 0.66 Pint 243883 209-SA
In stock online.

$36.99

#209-SB Extra Slow Hardener, 0.33 Gallon 372953 209-SB
In stock online.

$82.99

#209-SC Extra Slow Hardener, 1.5 Gallons 372888 209-SCC
In stock online.

$244.99

#209-SE Extra Slow Hardener, 17.34 Gallons 372896 209-SE
Delivery within 2 - 3 weeks.

$2,079.99

Product Description

209 Extra Slow Hardener is formulated for use with WEST SYSTEM Brand 105 Resin for general coating and bonding applications in extremely warm and/or humid conditions or when extended working time is desired at room temperature. Provides approximately twice the working time of 206 Slow Hardener. Forms a clear, amber-colored solid with good physical properties and moisture resistance for bonding and coating applications. Not intended for clear coating.

  • Mini Pump Kit is a must for precise metering of all group sizes of WEST SYSTEM resins and hardeners
Mix Ratio, Resin:Hardener
Pot life at 72°F (22°C)
at 95°F (35°C)
Cure to a solid state at 72°F (22°C)
at 95°F (35°C)
Cure to maximum strength at 72°F
Minimum recommended temperature
Pumps
3:1 by volume (3.5:1 by weight)*
40 to 50 minutes
15 to 20 minutes
20 to 24 hours
6 to 8 hours
4 to 9 days
70°F (21°C)
300, 306-23 or 309-3
       

Specs

REVIEW SNAPSHOT®

by PowerReviews
West System #209-sa Extra Slow Hardener, 0.66 Pint
 
5.0

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 3 customers

Sort by

Displaying reviews 1-3

Back to top

 
5.0

Extra Slow Hardener

By Ed

from Las Vegas, NV

About Me Casual/ Recreational

Verified Buyer

Pros

  • Easy to Use
  • Weather Proof

Cons

    Best Uses

    • Indoor
    • Outdoor
    • Quick Fix
    • With 105

    Comments about West System #209-sa Extra Slow Hardener, 0.66 Pint:

    It worked great, exactly as advertised. It set quicker than I expected.

     
    5.0

    Time to work!

    By Frank

    from Enid, Oklahoma

    About Me Casual/ Recreational

    Verified Buyer

    Pros

      Cons

        Best Uses

        • Rudder Repair

        Comments about West System #209-sa Extra Slow Hardener, 0.66 Pint:

        I am 76 years old, and move more slowly than in the past. The slow hardener allows me more time to soak the mat with resin and roll it into place. I cut the number of mats and cloth I need for one side of the rudder, soak them one by one and roll them on, then go on to another project until that side is cured. Then I turn the rudder over and complete the second side. I haven't totally completed the project, but it is looking very good.

        (1 of 1 customers found this review helpful)

         
        5.0

        Good for newbies!

        By Cheryl

        from Van Nuys, California

        About Me New at this

        Verified Buyer

        Pros

        • Allows you time to tweak
        • Easy clean-up
        • Excellent gloss
        • Repels water

        Cons

          Best Uses

          • Fiberglas Surfaces
          • Wood surfaces

          Comments about West System #209-sa Extra Slow Hardener, 0.66 Pint:

          We put on a little at a time, which spread very nicely, and left plenty of time for tweaking cloth and removing those crumbs that seem to materialize no matter how thoroughly you brush beforehand. We did not have to 'race the resin', and the second coat homogenized without a seam. [...]

          Displaying reviews 1-3

          Back to top

          Questions about this Product?
          1 (800) 262-8464