One component epoxy system for bonding, sealing and coating

Key Features

  • Very fast cure
  • High shear strength properties
  • Unlimited working life at room temperature
  • Wide service temperature range of -60°F to +400°F
  • Superb thermal and electrical insulator
  • Withstands 1,000 hours 85°C/85% RH

Product Description

Master Bond EP3HT combines easy processing with excellent physical and bonding strength properties. It is a one part system requiring no mixing and can be stored at room temperature or in a refrigerator. While it needs oven curing with a minimum temperature of 250°F, it is exceptionally fast curing at that temperature (even faster at higher temperatures). It bonds well to a wide variety of substrates including glass, metals, ceramics and most plastics and has superb physical strength properties. EP3HT also offers good electrical insulation properties. The service temperature is -60°F to +400°F. It is 100% reactive and does not contain any diluents or solvents. EP3HT possesses superior chemical resistance to water, oils, fuels and many acids and bases. The color of EP3HT is brown to tan. This epoxy is widely used in the aerospace, electronics, electrical and OEM industries where superior physical properties, fast curing and high performance are essential. A non-drip version called EP3HTND-2, which can be applied to vertical surfaces without sagging or dripping, is also available.

Product Advantages

  • Single component system; no mixing required
  • Minimum cure temperature of 250°F
  • Easy application; contact pressure only required during heat cure; adhesive spreads evenly and smoothly
  • Fast curing with versatile cure schedules; 5-10 minutes at 300°F, 20-30 minutes at 250°F
  • Good adhesion to many substrates and superior physical properties
  • Excellent bonding strength

Product Citation

EP3HT was cited in a thesis paper titled "Planar Packaging and Electrical Characterization of High Temperature SiC Power Electronic Devices" by Naili Yue at Virginia Polytechnic Institute and State University. For more information click here.

Industrial Certifications

1,000 Hours at 85°C/85% RH




Single Barrel Cartridge


EP3HT is available is various sizes and units to accommodate customer's needs.

Visual Media

Singular Sensation

Master Bond EP3HT and EP3HTMed are single component epoxy systems that offer incredibly simple processing with no mixing, unlimited working lives and rapid curing at elevated temperatures.

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