Quick Facts

  • Non-toxic / non-hazardous
  • High Flash Point
  • Extreme oxidation resistance
  • Ideal for systems open to atmosphere

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Duratherm 600 Heat Transfer Fluid

Duratherm 600 is engineered for precise and efficient temperature control up to 600° F (315°C) With a high flashpoint, low vapor pressure and an initial boiling point above the maximum operating temperature Duratherm 600 offers safety and performance for many diverse applications.

The Difference

Duratherm 600 thermal oil contains the industry's most effective and resilient blend of additives to ensure long-lasting, trouble-free service.

Our exclusive system includes a proprietary, dual stage anti-oxidant and a special blend of metal deactivators, extenders, and other agents that prolong fluid life and help keep systems clean. That also means longer life for parts like pumps and rotary seals.

Lasts Longer

Oxidation can cripple your system. Left unchecked, it will ultimately cause catastrophic failure and costly downtime. That's why Duratherm 600 thermal oil offers unsurpassed levels of protection against oxidation, and a service life that other fluids simply can't match.

Runs Cleaner

Duratherm 600 thermal oil delivers superior resistance to sludging, a problem plaguing most other fluids. That makes it the best defense against extreme oxidation found in many of today's demanding manufacturing environments, including plastics processing, molding, casting, asphalt, paint, chemical and a wide variety of other applications. In fact, our exclusive additive technology makes Duratherm 600 the perfect solution for all applications, large or small requiring precise temperature control up to 600° F (315°C).

Environmental

Duratherm 600 thermal oil is environmentally friendly, non-toxic, non-hazardous and non-reportable. It poses no ill effect to worker safety and does not require special handling. After its long service life, Duratherm 600 thermal oil can easily be disposed of with other waste oils.

Duratherm 600 Properties
Appearance: colorless, clear and bright liquid
Maximum bulk/use Temp. 600°F 315°C
Flash Point ASTM D92 435°F 224°C
Fire PointASTM D92 464°F 240°C
Autoignition ASTM E-659-78 680°F 360°C
ViscosityASTM D445  
cSt at 104°F / 40°C 34.3  
cSt at 212°F / 100°C 5.6  
cSt at 600°F / 316°C 0.7
Pour Point ASTM D97 14°F -10°C
Density ASTM D1298 lb/ft3 g/ml
at 100°F / 38°C 52.7 0.844
at 500°F / 260°C 43.3 0.693
at 600°F / 316°C 41.0 0.656
Average Molecular Weight 372
Carbon Residue ASTM D189 0.005 % Mass
Sulphur ContentX-RAY <.001 weight %
CU Strip Corrosion ASTM D130 1a  
Thermal Expansion Coefficient 0.0564 %/°F 0.1011 %/°C
Thermal Conductivity BTU/hr F ft W/m K
at 100°F / 38°C 0.082 0.141
at 500°F / 260°C 0.075 0.129
at 600°F / 316°C 0.074 0.128
Heat Capacity BTU/lb F kJ/kg K
at 100°F / 38°C 0.470 1.967
at 500°F / 260°C 0.645 2.700
at 600°F / 316°C 0.680 2.847
Vapor Pressure ASTM D2879 psi kPa
at 100°F / 38°C 0.00 0.00
at 500°F / 260°C 0.39 2.68
at 600°F / 316°C 1.62 11.17
Distillation Range ASTM D2887 10% 715°F (379°C)
  90% 886°F (474°C)
What they're saying...

"The heat transfer appears to be the best it's ever been " — R. Barnett

"You manufacture products that perform exactly as advertised, which is not always the case in the marketplace." — H. Blair

"We were thoroughly impressed with DuraClean Ultra. The system was spotless, and all of the hard build-up was completely removed in only 6 hours" — M. Fransiscovich

"You proved once again that while your goal is to grow. It's through honest customer service and great products." — K. Rose

"The oil still looks as clear as it did when we first put it into use." — J. Thomas

"We used to have to roto-rooter the heater zones due to clogging. This hasn't been a problem since we switched to Duratherm 600." — R. Barnett

"We have increased the time between oil changes and nearly eliminated any issues." — J. Smith

"The fluid is still clean and clear … I can see the bottom of the tanks." — S. Bailey