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Four containers of MAS Epoxies Medium Resin Hardener on a white background
MAS Epoxies 2:1 Non-Blush Formula, Medium Epoxy Hardener, 1 Pint
MAS Epoxies 2:1 Non-Blush Formula, Medium Epoxy Hardener, 1 Quart
MAS Epoxies 2:1 Non-Blush Formula, Medium Epoxy Hardener, 0.5 Gallon
MAS Epoxies 2:1 Non-Blush Formula, Medium Epoxy Hardener, 1 Gallon
Person applying epoxy resin to a boat repair with a brush, wearing blue gloves.
Person wearing a blue glove using a yellow applicator tool apply MAS epoxy laminating resin.
Person applying MAS epoxy to a wooden surface using a brush.
Person applying a MAS Epoxies to fiberglass cloth with gloves and tools in the background.

MAS Epoxies 2:1 Non-Blush Formula, Medium Epoxy Resin Hardener

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Product Overview:

MAS Epoxies 2:1 Non-Blushing Medium Epoxy Resin Hardener is designed for use with both MAS Low-Viscosity Epoxy Resin and MAS FLAG Medium Viscosity Epoxy Resin and can be applied in a wide range of conditions where increased cure and working time is desired.

Moderate pot life, gel, and thin film set times provide are excellent for filleting and fairing.

Using MAS Epoxy Resin & Medium Hardener mixed with a MAS thickener, gels and sets quickly enough to avoid draining and sagging while still allowing ample flow time for controlled application periods. MAS recommends MAS Medium Hardener when "overnight" sanding is more important than continuous laminating and open time (as provided by MAS 2:1 Slow Hardener).

MAS Medium will also provide a beautifully smooth, void free finish with great resistance to milking out during application and fogging in critical clear coating applications. MAS Medium's cure speed may be adjusted by the addition of MAS Fast or MAS Slow 2:1 formula Hardeners. The 2:1 mix ratio of Resin to Hardener should be maintained, regardless of hardener blend.

Cures blush free and eliminates the need for time consuming wash downs during on-going laminations and repetitive build coats.

Download the MAS FLAG Resin Technical Data Sheet here and the MAS LV Resin Technical Data Sheet here with MAS Hardener comparison information.

Available in pint, quarts, half gallons and gallons.

Features & Benefits:

  • No messy wash downs due to non-blushing properties
  • Medium gel time is great for medium-sized lamination projects and mild temperatures
  • Recommended for use with MAS fillers and MAS FLAG Resin for gluing, bonding and filleting
  • Smooth finishes in resultant cured films
  • Excellent osmotic (moisture) resistance
  • Will cure under high humidity conditions
  • Clear resulting finish
  • Can also be mixed with MAS Non-blushing Fast or Medium Hardeners for custom working times
  • 15-minute pot-life @ 70°F
  • 3-hour working time @ 70°F

    Application Suggestions:

    • Gel, and thin film set times provide are excellent for filleting and fairing
    • Recommend when "overnight" sanding is more important than continuous laminating and open time

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