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Heat Transfer Fluids – Thermal Fluids

Duratherm offers a wide range of thermal fluids (also called heat transfer fluid or thermal oil) for just about every application and uses anywhere from -84ºC (-120ºF) right up to 338ºC (640ºF). Most are non-toxic and non-hazardous, some even food-grade, but all are highly efficient, clean-running, and long-lasting.

How to choose the best heat transfer fluid for your application?

Truth is a lot of heat transfer fluids look alike and If specified properly, they all transfer heat efficiently — the difference is ours just tend to last longer. And while most of the time heat transfer fluids run trouble-free, you want to also choose a company who has the expertise and responsive support to help you when they don’t. All we do is heat transfer fluids and we spend every day helping the people that use them or need help choosing them.

Confused? We can help.

1-800-446-4910
inquiry@durathermfluids.com

Help is just a phone call or email away – our technical support team – not sales people – are readily available to learn more about your needs and application

Browse Other Fluids:

OPEN BATH FLUIDS | SYSTEM CLEANERS | GLYCOL COOLANTS

Thermal Fluid Finder

Application:

°F

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Filtered Products

    °F | °C

    Duratherm 450-FG

    Max.Temp
    450°F

    Flash Point
    302°F

    X

    A food grade thermal fluid rated to 233°C (450°F), Duratherm 450-FG is made for applications in the food industry that need both process heating and cooling. Cost effective and stable across a wide temperature range, it meets USDA’s standards for incidental food contact, is NSF registered as HT1, and meets the requirements of 21 CFR 178.3570.

    Duratherm 450

    Max.Temp
    450°F

    Flash Point
    302°F

    X

    Rated to 232°C (450°F), Duratherm 450 is specifically engineered for applications requiring a thermal fluid capable of efficient process heating and cooling. Economical and thermally stable, it provides precise temperature control and is proven to be an excellent alternative to costly synthetics and aromatic fluids.

    Duratherm 600

    Max.Temp
    600°F

    Flash Point
    435°F

    X

    Rated to 316°C (600°F) and specifically engineered to withstand the extreme oxidation environment of open (to atmosphere) systems, the Duratherm 600 thermal fluid incorporates a proprietary dual-stage anti-oxidant for long, trouble free operation in a variety of applications. It’s an environmentally friendly, non-toxic thermal fluid (heat transfer fluid) capable of providing precise temperature control.

    Duratherm 630

    Max.Temp
    630°F

    Flash Point
    444°F

    X

    Rated to 333°C (630°F) and engineered to be an economical and environmentally friendly replacement to chemical aromatic thermal fluids, Duratherm 630’s enhanced blend is designed to offer years of trouble free service and superior protection from oxidation even at higher operating temperatures.

    Duratherm FG

    Max.Temp
    620°F

    Flash Point
    440°F

    X

    Rated to 327°C (620°F), Duratherm FG is a thermal fluid with 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 G

    Max.Temp
    500°F

    Flash Point
    480°F

    X

    Duratherm G is a glycol based thermal fluid rated to 260°C (500°F), a proprietary additive system that not only helps the fluid last longer and run cleaner, it makes it the ideal choice for extreme oxidation environments including demanding, open bath applications.

    Duratherm HF-FG

    Max.Temp
    640°F

    Flash Point
    530°F

    X

    A food grade heat transfer oil rated to 277°C (530°F), Duratherm HF-FG is specifically engineered for process heating and cooling applications that need the added safety of a high flash point. Economical and thermally stable, it meets USDA requirements for incidental food contact, is NSF registered HT1, and meets the requirements of 21 CFR 178.3570.

    Duratherm HF

    Max.Temp
    640°F

    Flash Point
    530°F

    X

    Engineered for its high flash point of 277°C (530°F) with an operating limit of 338°C (640°F), the Duratherm HF heat transfer oil offers a solution to those customers requiring the additional margin of safety needed to meet their own internal safety standards or those of their insurance carrier or government regulators.

    Duratherm HTO-FG

    Max.Temp
    600°F

    Flash Point
    425°F

    X

    Engineered for precise and efficient temperature control up to 316°C (600°F), our HTO-FG thermal fluid is a budget-wise, food grade solution for any heat transfer applications that need an environmentally friendly, low cost fluid capable of meeting today’s fast-paced production demands.

    Duratherm HTO

    Max.Temp
    600°F

    Flash Point
    425°F

    X

    Engineered for precise and efficient temperature control up to 316°C (600°F), our HTO thermal fluid is a budget-wise solution for any heat transfer fluid applications that want an environmentally friendly, low cost fluid capable of meeting today’s fast-paced production demands.

    Duratherm HTO22-FG

    Max.Temp
    600°F

    Flash Point
    415°F

    X

    Rated for use up to 315°C (600°F) it’s engineered with a low pour point for easy starts and manufactured to comply with the demands of food grade applications ranging from food processing and packaging to pharmaceutical and more.

    Duratherm LT

    Max.Temp
    437°F

    Flash Point
    329°F

    X

    Engineered for a variety of heat transfer fluid processes requiring heating and cooling, Duratherm LT is ideal for batch processing operations requiring a low temperature heat transfer fluid that is pumpable down to -29°C (-20°F) – eliminating the need for heat tracing often required in outdoor applications.

    Duratherm S

    Max.Temp
    600°F

    Flash Point
    615°F

    X

    A silicone based heat transfer fluid that is ideally suited for high oxidation applications or completely exposed systems. Duratherm S is virtually impervious to oxidation at temperatures under 204°C (400°F) and offers superior protection from fluid degradation. Duratherm S is best suited for applications not prone to contamination or leaking.

    Duratherm XLT-2

    Max.Temp
    350°F

    Flash Point
    145°F

    X

    Engineered for long-term operation in heat transfer applications requiring precise temperature control ranging from -84°C (-120°F) up to 177°C (350°F). Ideal for near-cryogenic applications Duratherm XLT-2’s economical cost and wide operating temperature also makes it well-suited for heating and cooling applications found in the food processing, pharmaceutical, chemical and botanical extraction industries.

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