Therminol® 55 Heat Transfer Fluid

Therminol 55 is a synthetic heat transfer fluid used in moderate-temperature applications.

Therminol 55 Temperature Graphic

Therminol 55 fluid is designed for use in non-pressurized low-pressure, indirect heating systems. It delivers efficient, dependable, uniform process heat with no need for high pressures.

Product availability: Americas/Asia Pacific. Contact your local sales representative for more information.

Performance Benefits

  • Long Life—You will get years of reliable, cost-effective performance even when operating your system continuously at 290°C (550°F). This means you do not have to over specify your fluid.
  • Excellent resistance to fouling— Because Therminol 55 is a synthetic fluid, it resists the effects of oxidation 10 times better than mineral oils making less oxidation and solids formation. For systems without nitrogen inerting, the performance advantages are significant.
  • Excellent Low-Temperature Pumpability—Therminol 55 is still pumpable at -28°C (-18°F ), compared to some mineral oils that will not pump at temperatures below -7°C (20°F ). With Therminol 55, your heat transfer fluid system can start up quickly and easily.
Product Documents

SDS (All Regions)

Technical Bulletin

Technical Data Sheet