duratherm heat transfer fluids

Duratherm HTO

Engineered for precise and efficient temperature control up to 315°C (600°F), our HTO is a budget wise solution where heat transfer applications require an environmentally friendly, low cost fluid to meet today’s fast paced production demands.



Duratherm HTO is engineered for many years of service and it’s ideal for a wide range of closed to atmosphere (inertly sealed) applications including paint, rubber, paper mill calendars, board plants, roofing, textiles, laundry, refineries and asphalt production.


Duratherm HTO’s use of highly refined base stocks ensures excellent thermal stability. Its low volatility also minimizes vapor pressure at elevated temperatures and unlike most other fluids in its class, Duratherm HTO contains antioxidants*, metal deactivators and corrosion inhibitors to further enhance the fluid’s longevity and help protect your system. *For critical applications where high levels of oxidation are prevalent please consider Duratherm 600.


Duratherm HTO is environmentally friendly, non-toxic, non-hazardous and non-reportable. Duratherm HTO poses no ill effect to worker safety.


After its long service life Duratherm HTO can easily be disposed of with other waste oils. Duratherm supports recycling and encourages oil reclamation programs where possible.


If your existing fluid has let you down and left you with a system full of sludge or carbon, we’ve developed a full line of heat transfer system cleaners to get your system back to like-new condition. Contact us for complete details. LESS
Note: The values quoted in the table above are typical of normal production. They do not constitute a specification.

    Quick Facts

    • Maximum temperature: 315°C
    • Budget fluid for closed systems
    • High flashpoint
    • Non-toxic/non-hazardous


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