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Marine Epoxy Resin Hardener 520 Slow Drying

$21.99 - $135.98
Use 520 Slow Hardener when you are working on a large lamination project. The slow gel time and cost effective pricing will make you a happy boat builder. Only use this product at a 5:1 by volume mix ratio with the Marine Epoxy Traditional Resin.
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Use 520 Slow Hardener when you are working on a large lamination project. The slow gel time and cost effective pricing will make you a happy boat builder. Only use this product at a 5:1 by volume mix ratio with the Marine Epoxy Traditional Resin.

  • 5 to 1 mix ratio by volume with Traditional Marine Resin
  • 20 min pot life
  • 1.5 hr work time at 70F degrees
  • Ideal for sealing wood surfaces, bonding applications, marine construction, marine repair, cold molding process for fabricating wood and fiberglass structures
  • Great for laminating wooden FRP construction boat hulls or other projects
  • Can be used with our fillers and for gluing, bonding and filleting
  • Cost effective laminating hardener

Purchase with Traditional Marine Resin for a complete system:

  • Marine Hardener 320 Clear Finishing Topcoat - 30 min pot life / 4 hr work time at 70F degrees / 3:1 mix ratio with Traditional Marine Resin / Non-blushing ultra crystal clear finishing topcoat
  • Marine Hardener 520 Slow - 20 min pot life / 1.5 hr work time at 70F degrees / 5:1 mix ratio with Traditional Marine Resin / Use for structural lamination and strength
  • Marine Hardener 510 Fast - 12 min pot life / 1 hr work time at 70F degrees / 5:1 mix ratio with Traditional Marine Resin / Use on small to medium sized structural lamination projects and fillet or to repair and fill holes.

How Much Will I Need?

What are the dimensions of your project?

Volume of your project

Cubic Inches72

Cubic Feet0.04

Amount of epoxy resin you will need

Ounces39.89

Liters1.18

Gallons0.31