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PRO-SET LAM-229 Hardener – Slow



The PRO-SET Laminating Epoxy 229 Slow Cure Laminating Hardener is a must have when you have multiple steps to your project and require a working time of 4 to 5 hours. The product will fully gel in about 6 to 7 hours at 77°F.

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PRO-SET 229 Hardener is mixed with PRO-SET Resins to provide medium pot life and cure time. PRO-SET 229 Hardener has a slow cure speed which provides 4 to 5 hours working time at 77°F. A typical laminate will be gelled in approximately 6 to 7 hours at 77°F.

Not sold as a kit. Must order Resin in addition to one of the hardeners.
Domestic Shipping via Ground Only

⚠️WARNING: This product can expose you to chemicals including Benzene which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov



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Physical Properties Mixed with 125/135 Resin

  • Mix Ratio:
    • Volume: 3.5 parts resin to 1 part hardener
    • Weight: 3 parts resin to 1 part hardener
  • 150g Pot Life (125 Resin): 199 minutes @ 72°F
  • 150g Pot Life (135 Resin): 151 minutes @ 72°F
  • Working Time: 4 to 5 Hours @ 77°F
  • Gelled: 6 to 7 Hours
  • Cure: Room Temperature
  • Color: Clear

  Technical Properties Mixed with 125 Resin

  • Viscosity, Mixed: 568 cP
  • Density, Cured: 9.71 lb/gal @ 72°F
  • Hardness: 85 Type D
  • Compression Yield: 16,000 psi
  • Tensile Strength: 8,360 psi
  • Tensile Modulus: 5.68E+05 psi
  • Tensile Elongation: 1.7%
  • Flexural Strength: 13,300 psi
  • Flexural Modulus: 5.13E+05 psi

  Technical Properties Mixed with 135 Resin

  • Viscosity, Mixed: 1098 cP
  • Density, Cured: 9.76 lb/gal @ 72°F
  • Hardness: 86 Type D
  • Compression Yield: 15,400 psi
  • Tensile Strength: 7,930 psi
  • Tensile Modulus: 5.55E+05 psi
  • Tensile Elongation: 1.6%
  • Flexural Strength: 12,000 psi
  • Flexural Modulus: 5.17E+05 psi

Please note: All data to be used as a guide only; not a specification. Tests are performed at @ 72°F x 4 weeks.


How to Guides Preventing Bubbles in Epoxy Resin


Due to U.S. Department of Transportation Hazardous Materials regulations and International Air Transport regulations we can only ship this product by domestic ground service within the contiguous United States. Limited Quantities are stocked to ensure maximum shelf life of material, please allow a 2-3 week lead time from the date your order is placed. If stock is available it will ship within the standard 2-3 day processing time.


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