Quick Facts

  • Ideal for open bath systems
  • Extreme Oxidation Resistance
  • Aternative to Ucon 500

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Duratherm G

Polyalkylene glycol based fluids such as UCON 500® are a widely used form of heat transfer fluid that until now offered only average performance, short fluid life and have not been compatible with most other types of heat transfer fluids.

Duratherm G’s exclusive additve system now allows for its successful use in high demand applications like those found in the plastic industry, die casting and even performs and lasts exceptionally well in open baths.

Finally ... A glycol heat transfer fluid that's compatible with the more common petroleum fluids!

Compatibility

Duratherm G not only outperforms most other fluids it also contains a unique and proprietary additive that makes it compatible with the more commonly used petroleum based fluids. This allows for a worry free transition across different fluid chemistries and eliminates any need for special procedures.

We've also reduced odors and improved fluid clarity when compared to other glycol fluids.

Longevity

In the heat transfer fluid industry cost is always a concern, however fluid longevity and resistance to harmful fouling are of equal importance.

Air contact is normally detrimental to a fluid. Oxidation can cripple your system and if left unchecked will ultimately cause catastrophic failure. Unscheduled downtime due to oil failure has a high cost and negative effect on production.

Duratherm G contains our proprietary blend of anti-oxidants, corrosion inhibitors, metal deactivators, seal and gasket extenders etc. to ensure a long trouble free service life in even the most demanding, extreme oxidation applications.

Duratherm G Properties
Appearance: clear liquid, very slight yellow tint
Maximum bulk/use Temp. 500°F 260°C
Flash Point ASTM D92 511°F 267°C
Fire Point ASTM D92 543°F 284°C
Autoignition ASTM E-659-78 704°F 373°C
Viscosity ASTM D445    
cSt at 104°F / 40°C 48.3  
cSt at 250°F / 121°C 6.0  
cSt at 500°F / 260°C 1.5  
Pour Point ASTM D97 -40°F -40°C
Density ASTM D1298 lb/ft3 g/ml
at 100°F / 38°C 57.1 0.914
at 250°F / 121°C 54.5 0.873
at 500°F / 260°C 49.2 0.788
Thermal Expansion Coefficient 0.0377 %/°F 0.0801 %/°C
Thermal Conductivity BTU/hr F ft W/m K
at 100°F / 38°C 0.095 0.164
at 250°F / 121°C 0.088 0.152
at 500°F / 260°C 0.076 0.131
Heat Capacity BTU/lb F kJ/kg K
at 100°F / 38°C 0.470 1.967
at 250°F / 121°C 0.510 2.135
at 500°F / 121°C 0.560 3.179
Vapor Pressure ASTM D2879 psi kPa
at 100°F / 38°C 0.04 0.27
at 250°F / 121°C 0.16 1.10
at 500°F / 260°C 0.55 3.79
Distillation Range ASTM D2887 10% 694°F (367°C)
  90% 957°F (513°C)
What they're saying...

"The difference between Calflo heat transfer fluid and Duratherm 600 was amazing." — J. Gerbec

"I am very pleased with the product and would buy it again if it ever wears out, but that might be a while!" — J. Thomas

"A few companies along the way have been helpful, but none like Duratherm." — K. Rose

"Our oxidation problems have disappeared and we have had no issues of any kind with these fluids." — H. Blair

"Duratherm continues to improve their product line and delivers excellent service with good, dependable products." — D. Skaggs

"We filled the unit with Duratherm and haven't had a single issue since." — M. Fransiscovich