Quick Facts

  • Non-toxic, non-hazardous
  • Low to high temp. capable
  • Great for batch processing

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Duratherm LT Heat Transfer Fluid

Duratherm LT heat transfer fluid is engineered for applications requiring process temperatures ranging from -30°F to 600°F.

Ideal for batch processing requiring heating and cooling cycles. Eliminates the need for heat tracing in outdoor applications.

The Difference

Our exclusive additive package, including a proprietary dual stage anti-oxidant, ensures long trouble-free operation. Duratherm also incorporates metal deactivators, a seal and gasket extender, defoaming and particle suspension agents.

Lasts Longer

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.

The Duratherm product line was developed with this in mind. Most other fluids fall short in their protection from oxidation and can quickly foul a system. Duratherm is engineered to give unsurpassed levels of protection and service life.

Environmental

Duratherm LT heat transfer fluid is environmentally friendly, non-toxic, non-hazardous and non-reportable. Worker health and safety is of great concern, Duratherm LT heat transfer fluid poses no ill effect to worker safety. After its long service life it can easily be disposed of with other waste oils.

Duratherm LT Properties
Appearance: colorless, clear and bright liquid
Maximum bulk/use Temp. 600°F 315°C
Flash Point ASTM D92 329°F 165°C
Fire Point ASTM D92 370°F 188°C
Autoignition ASTM E-659-78 675°F 357°C
Viscosity ASTM D445    
cSt at 104°F / 40°C 7.9  
cSt at 212°F / 100°C 2.3  
cSt at 600°F / 316°C 0.5  
Pour Point ASTM D97 -72°F -58°C
Density ASTM D1298 lb/ft3 g/ml
at 100°F / 38°C 50.1 0.802
at 500°F / 260°C 40.4 0.647
at 600°F / 316°C 38.9 0.623
Average Molecular Weight 395  
Carbon Residue ASTM D189 0.005 % Mass
Sulphur ContentX-RAY <.001 weight %
CU Strip Corrosion ASTM D130 1a  
Thermal Expansion Coefficient 0.0564 %/°F 0.1016 %/°C
Thermal Conductivity BTU/hr F ft W/m K
at 100°F / 38°C 0.081 0.140
at 500°F / 260°C 0.070 0.121
at 600°F / 316°C 0.066 0.114
Heat Capacity BTU/lb F kJ/kg K
at 100°F / 38°C 0.511 2.139
at 500°F / 260°C 0.691 2.893
at 600°F / 316°C 0.723 3.027
Vapor Pressure ASTM D2879 psi kPa
at 100°F / 38°C 0.00 0.00
at 500°F / 260°C 4.19 28.88
at 600°F / 316°C 8.05 55.50
Distillation Range ASTM D2887 10% 613°F (323°C)
  90% 784°F (418°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