Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

GEKR378 Epoxy Resin

GEKR378 Epoxy Resin is a high-performance bisphenol-A-based epoxy resin from the GEKR series by Hexion. It offers excellent adhesion, chemical resistance and mechanical strength. Widely used in composites, electrical encapsulation and structural adhesives. Low viscosity ensures easy processing and superior wetting. Meets industrial standards for reliability and consistency in demanding applications.
  • gekr378 epoxy resin_028fb422
  • gekr378 epoxy resin_028fb422

Features Of GEKR378 Epoxy Resin

  1. High reactivity with standard amine and anhydride hardeners for rapid cure at ambient or elevated temperatures.

  2. Excellent adhesion to metals, composites, and treated plastics without primer requirement.

  3. Low viscosity (12,000–15,000 cP at 25°C) enabling easy processing via casting, impregnation, and filament winding.

  4. Superior electrical insulation properties with high dielectric strength (>18 kV/mm) and volume resistivity (>1 × 10¹⁴ Ω·cm).

  5. Good thermal stability with glass transition temperature (Tg) of 125–135°C after full cure with DDS.

Typical Applications Of GEKR378 Epoxy Resin

  1. Electrical encapsulation and potting of transformers, inductors, and high-voltage sensors.

  2. Structural adhesive formulation for aerospace composite bonding and metal-to-composite joints.

  3. Matrix resin for carbon fiber and glass fiber reinforced laminates in wind turbine blades and automotive components.

  4. Insulating coatings and busbar encapsulants in power electronics and EV battery modules.

  5. Tooling and mold-making resins for low-volume production of precision composite parts.

Specifications Of GEKR378 Epoxy Resin

Chemical TypeBisphenol-F based diglycidyl ether epoxy resin
Product FormClear to pale yellow viscous liquid
AppearanceHomogeneous, transparent, free from gels and particulates
Epoxy Equivalent Weight (EEW)172–178 g/eq
Viscosity (25°C)12,000–15,000 cP
Color (Gardner)≤3
Volatile Content (wt%)<0.3%
Primary ApplicationsEncapsulation, structural composites, electrical insulation, high-performance adhesives


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