MAS Epoxy Slow  Hardener
MAS MAS epoxy
  • MAS Epoxy Slow  Hardener
  • MAS Slow Hardener

MAS Epoxies Slow Hardener

MAS Slow hardener is formulated for use with MAS epoxy resins and can be applied in a wide range of conditions where increased working time is required.

We highly recommend MAS Slow Hardener when coating or laminating large surfaces. The Slow formulation cures blush free and eliminates the need for time consuming wash downs during on-going laminations or repetitive build coats.

Use this hardener (200-250 poise) with MAS low viscosity epoxy resin for fast wet-out of reinforcing fabrics.

Note: Due to this item's high hazardous content, the 4 gallon and larger containers cannot be shipped by UPS or FedEx under any circumstances.

 
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Tech Spec Product Info User Generated Content
    Technical Specifications
  • Mixed Viscosity w/MAS Epoxy Resin at 77 deg F: 500-600 cps
  • Mixing Ratio 2:1 Resin to Hardner
  • Pot Life at 77 deg F: 23 minutes
  • Thin Film Set Time at 77 deg F: 5 hours
  • Full Cure: 7 days
  • Flash Point (closed cup): 234 degrees F
  • Specific Gravity at 77 degrees F: 0.998
  • Viscosity at 77 degrees F: 200
    • Performance
  • Flexural Strength: 14,600 psi
  • Flexural Modulus: 535,000 psi
  • Tensile Strength: 8,000 psi
  • Tensile Modulus: 384,000 psi
  • Elongation: 9 percent
  • Compressive Strength: 14,000 psi
  • Compressive Modulus: 384,000 psi
  • Use protective gloves when working with epoxy resin systems. Use soap and water or white vinegar to clean your hands. Use Denatured Alcohol to clean your tools.

    BRAND: MAS
    Material: Epoxy
    Rate Of Cure: Slow
    Type: Hardener
    4.7 6

    REVIEW SNAPSHOT®

    by PowerReviews
    MAS Epoxies Slow Hardener
     
    4.7

    (based on 6 reviews)

    Ratings Distribution

    • 5 Stars

       

      (4)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Easy to use (6)

    Cons

      Best Uses

      • Outdoors (3)
        • Reviewer Profile:
        • Recreational (3)

      Reviewed by 6 customers

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      Displaying reviews 1-6

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      (1 of 1 customers found this review helpful)

       
      5.0

      Great product

      By Rich

      from Stratford, CT

      About Me Casual/ Recreational

      Verified Reviewer

      Pros

      • Easy to Use

      Cons

      • None

      Best Uses

      • Fiberglass
      • Outdoor

      Comments about MAS Epoxies Slow Hardener:

      Not as toxic as other hardeners. 2:1 mix with Mas resin as opposed to 5:1 West Systems. No yellow tint as with West System

      (1 of 1 customers found this review helpful)

       
      5.0

      nice and slow

      By Paul

      from Maryland

      About Me Casual/ Recreational

      Verified Reviewer

      Pros

      • Easy to Use

      Cons

        Best Uses

          Comments about MAS Epoxies Slow Hardener:

          it works nice and slow giving you a lot of working time. In colder temps it might be better to use a faster hardener but I have not tried it.

           
          5.0

          Great product, easy to work with.

          By DocChicago

          from Alhambra, CA

          About Me Competitive

          Verified Reviewer

          Pros

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

          Cons

          • Watch for runs

          Best Uses

          • Outdoor
          • Stitch and glue plywood
          • Wood Trim

          Comments about MAS Epoxies Slow Hardener:

          I first used this product while building Skerry from Chesapeake Light Craft. It's supplied with the kit. It's long working time make it very easy to use for the novice boat builder. The beautiful amber hue it imparts to wood and it's diamond hard finish will give you a boat that will be passed down for generations. Make sure to cover with a Good UV varnish so the epoxy doesn't yellow with age.

          (1 of 1 customers found this review helpful)

           
          5.0

          This product has made my work easier

          By Jim wood worker

          from Greensboro, NC

          About Me Recreational

          Verified Reviewer

          Pros

          • Easy to Use

          Cons

            Best Uses

              Comments about MAS Epoxies Slow Hardener:

              I work with reclaimed wood this combined with the low viscosity resin does a great job of filling cracks and securing knots, saves me a lot of time.

              (1 of 1 customers found this review helpful)

               
              4.0

              Excellent working time

              By Buzz

              from Madison, WI

              About Me Recreational

              Pros

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

              Cons

                Best Uses

                • Outdoor

                Comments about MAS Epoxies Slow Hardener:

                The Mas slow hardner system is an excellent choice for people who need a little extra set up time as it is slower to go off than some other epoxies I have used. It sets up clear on it's own and mixes well with additives. I will be using this product on all my new projects.

                (1 of 1 customers found this review helpful)

                 
                4.0

                a perfect blend

                By DeLee

                from Hammond, IN.

                About Me Recreational

                Verified Reviewer

                Pros

                • Blends well
                • Easy to mix and measure
                • Easy to Use
                • Good working consistancy

                Cons

                • Messy

                Best Uses

                • Repairs of all kinds

                Comments about MAS Epoxies Slow Hardener:

                I used the MAS Epoxy resin products for repairs on an Hydra Sports Aero Cobra I am restoring. The slow hardener was a great choice for the repairs I had and did everything MAS said it would. Its slower set up time gave me plenty of time to work. It was easy to mix and apply. I ran out with one small job to do so I bought another brand locally. I greatly preferred the MAS over the other brand.

                Displaying reviews 1-6

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