TC 421

ABRI Industries TC 421 Clear Epoxy Shell is a clear, dual-component, low-volatile organic compound, surface applied, fully submersible protective coating that possesses outstanding abrasive and chemical resistance characteristics. TC 421 works with ABRI core protective coatings to defend key assets from demanding salt and freshwater deterioration or further structural loss.

TC 421 is a waterproof barrier, which creates a fully submersible solution as part of a two-step solution with ABRI IronBond 111, MicroBond 87, or ConcreteBond WR. TC 421 can also be used independently, as an aggressive, direct-to-metal surface protector.

TC 421 provides both applicators and asset owners with a traditional epoxy system, yet is much easier and safer to apply than most other epoxy products. You save time and money with TC 421, because it lasts up to five years – much longer than similar coatings on the market. The environmental friendly nature of TC 421 means training requirements are reduced, job-completion times are minimized, and job equipment is cleaned quickly and safely.

Benefits Applications
Resists multiple environmental threats, including:
  • Fully submersible
  • Fresh and saltwater environments
  • Abrasion
  • Chemical
  • Key Qualities

    • Protects for up to 4 years
    • Low VOC (
    • Odorless
    • Can be safely applied in some enclosed spaces
    • Excellent patch and repair capabilities
    • Very strong substrate bond
    • Minimal training requirements – no special tools required for application
    • Dry to the touch within 3 hours
    • Full cure within 72 hours
    • Environmentally friendly
  • ABRI IronBond 111
  • ABRI MicroBond 87
  • ABRI ConcreteBond WR
  • Metal
  • Concrete


  • Shipyards
  • Evaporation Ponds
  • Cooling Towers
  • Piers
  • Docks and Marinas

Complies with California VOC and AQMD requirements, as defined in Rule 1113.

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