duratherm heat transfer fluids

Duratherm FG

Rated to 327°C (620°F), It has a strong resistance to fouling for extended service and is engineered and manufactured to comply with the demands of food grade applications. Meets USDA requirements for incidental food contact (H1), meets the requirements of 21 CFR 178.3570 and is registered with the NSF HT1.



Duratherm FG is rated for use up to 327ºC (620˚F) and is amongst the highest temperature rated food grade fluids available. It is ideal for the oxidation rich environments often found in food processing and food packaging operations. Duratherm FG meets USDA requirements for incidental food contact (H1) and meets the requirements of 21CFR1783570 and is NSF registered.


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


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 FG is engineered to give unsurpassed levels of protection and service life.


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


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

    • Rated to 332ºC (620ºF)
    • NFS HT1 food grade
    • Resists oxidation
    • Environmentally friendly
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