3M™ Novec™ 649 Engineered Fluid is an advanced heat transfer fluid, balancing customer needs for physical, thermal and electrical properties, with desirable environmental properties. Novec 649 fluid is an effective heat transfer fluid with a boiling point of 49°C. Novec 649 fluid is useful in heat transfer particularly where non-flammability or environmental factors are a consideration.


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Listed below are key applications for 649. Documents specific to the application are listed to the right.

Typical Applications
Organic Rankine Cycle
  • Diesel Engines
  • Generators
  • Geothermal Applications
  • Solar Applications
  • Power Electronics such as IGBTs or inverters
  • Transformers and other equipment (SF6 replacement)
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Computer/Data Center Cooling
Features & Benefits
  • Outstanding environmental properties
  • GWP of 1
  • Non-ozone depleting
  • 5-day atmospheric lifetime
  • Large margin of safety in use
  • Low viscosity
  • High molecular weight
  • Low pour point
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