Master Bond Polymer Adhesive EP21AO is a two-component, thermally conductive, electrically isolating epoxy adhesive, sealant, and coating with a forgiving 1:1 mix ratio by weight or volume. This versatile system will adhere to a wide variety of substrates including metals, glass, ceramics, and many plastics. As a thermally conductive adhesive, it forms high strength bonds of over 1800 psi tensile shear. EP21AO resists a wide range of chemicals including water, oils, fuels, and some solvents over the temperature range of -60°F to +250°F. It also possesses a low coefficient of expansion and excellent dimensional stability. A low viscosity version called EP21AOLV is also available. That system is particularly well suited for potting applications.

  • Room temperature curing epoxy
  • Thermally conductive & electrically insulative
  • One to one mix ratio, by weight or volume
  • Impressive bond strength
  • Long working life
  • Low coefficient of thermal expansion