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Thermaflo™ 660

Thermaflo – 660 is a high performance synthetic heat transfer fluid specifically designed for use in non-pressurized, indirect, liquid phase heat transfer systems operated at bulk temperatures from 32 – 653 °F (0 – 345 °C).

  • Thermaflo – 660 offers exceptional thermal stability and resistance to oxidation in the temperature range from 32 – 653 °F (0 – 345 °C).
  • Thermaflo – 660 offers superior overall performance in the range from 150 – 653 °F (65 – 345 °C) where its kinematic viscosity remains below 10° CST and turbulent flow can generally be assured.
  • Thermaflo – 660 is readily pumpable at temperatures as low as 41 °F (5 °C) insuring trouble-free start up under almost any conditions.
  • Thermaflo – 660 offers lower vapor pressure and a higher normal boiling point than competitive alternatives.
  • Thermaflo – 660 offers significantly higher flash and autoignition temperatures than competitive alternatives.
Material Safety Data Sheet (MSDS)
Product List


Thermaflo™ is a trademark of CHEM Group Inc.