Two part high performance epoxy for bonding, sealing and encapsulation

Key Features

  • Long working life
  • Thermally conductive, electrically insulative
  • Passes NASA low outgassing test requirements
  • Good high temperature resistance

Product Description

Master Bond EP46HT-2AO Black is a two component epoxy system for demanding bonding, sealing and encapsulation applications where thermal conductivity, electrical insulation and high temperature resistance are required. It is 100% reactive and does not contain any solvents or diluents. EP46HT-2AO Black is formulated to cure rapidly and requires a cure temperature of 250°F or more. An optimal curing schedule is 3-4 hours at 250-300°F followed by a post cure of 2-3 hours at 350-400°F. The glass transition temperature is quite high, exceeding 200°C
and the service temperature range is -100°F to +500°F. Once cured, EP46HT-2AO Black features exceptional physical and mechanical properties, along with exquisite dimensional stability. It bonds well to a wide variety of substrates including metals, glass, ceramics, composites, various rubbers and many plastics. It is a highly functional electrical insulator. It has very good chemical resistance to water, fuels, oils, acids and bases. Most importantly, it passes NASA low outgassing testing. The color of Part A is black and Part B is gray. This high powered combination of product properties allows this system to be used in challenging applications in aerospace, electronics, optoelectronics and in vacuum environments.

Product Advantages

  • Extremely forgiving mix ratio
  • Very long open time at room temperature
  • Top notch heat resistance
  • Thermally conductive, electrically insulative
  • High quality dimensional stability
  • Meets NASA low outgassing requirements
  • Passes fungus resistance MIL-STD-810G

Industrial Certifications

ASTM E595 Compliant

MIL-STD-810G for Fungus Resistance

Meets EU Directive 2015/863




EP46HT-2AO Black is available is various sizes and units to accommodate customer's needs.

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