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Description
Relatherm ULT — Ultra-Low Temperature Heat Transfer Fluid | USA Lab
Relatherm ULT is an extended-life thermal fluid engineered for chillers and cryogenic equipment. With a usable range from −100 °C (−148 °F) up to 65 °C (150 °F), it delivers reliable sub-zero pumpability and can serve as a dual-use fluid when a process requires both heating and cooling.
Formulated from high-purity base fluids plus advanced additives, Relatherm ULT provides exceptional oxidation resistance to minimize sludge, reduce fouling, and extend service intervals—lowering maintenance costs and downtime in demanding low-temperature applications.
PFAS-Free: Contains no Polyfluoroalkyl Substances (PFAS). Low Environmental Impact: Low Global Warming Potential (GWP = 10).
−100 °C to 65 °C Ultra-Low Temp Cooling PFAS-Free Low GWP (10)
Temperature Bandwidth: −100 °C to 65 °C (−148 °F to 150 °F) for true ultra-low temp performance.
Pumpability: Flow assurance in sub-zero conditions to protect pumps and seals.
Oxidation Control: Two-stage antioxidant package minimizes sludge and heat-surface fouling.
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Why choose Relatherm ULT?
- Ultra-low temperature performance — cools processes down to −100 °C (−148 °F) with reliable pumpability.
- Dual-use capability — wide operating band supports both cooling and mild heating in a single loop.
- Maximum oxidation protection — robust additives reduce sludge and surface fouling for longer uptime.
- Extended fluid life — engineered for longevity even in oxidation-prone systems.
- ESG-minded formulation — PFAS-free with low GWP (10) to reduce environmental impact.
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Technical Specifications
| Model | Relatherm ULT — Ultra-Low Temperature Heat Transfer Fluid |
|---|---|
| Minimum Use Temperature | −100 °C (−148 °F) |
| Maximum Use Temperature | 65 °C (150 °F) |
| Flow Assurance | Remains pumpable within specified temperature bandwidth |
| Oxidation Protection | Two-stage antioxidant package; minimizes sludge and fouling |
| Environmental Profile | PFAS-Free; Low GWP = 10 |
| Additive Suite | Metal deactivators, rust inhibitors, seal/gasket extenders, proprietary agents |
| Recommended Applications | Process chillers, cryogenic equipment, low-temp reactors, thermal loops |
| Service Life | Extended versus conventional ultra-low temp fluids (under proper operating conditions) |
| Typical Appearance | Clear, low-viscosity thermal fluid |
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FAQ
How cold can Relatherm ULT safely operate?
Relatherm ULT has a minimum recommended use temperature of −100 °C (−148 °F), maintaining pumpability for reliable low-temperature circulation.
Can Relatherm ULT be used for both cooling and heating?
Yes. Thanks to its wide operating band (−100 °C to 65 °C), Relatherm ULT can function as a dual-use thermal fluid in processes that require both heating and cooling.
What protects against oxidation and sludge formation?
A sophisticated two-stage antioxidant system with metal deactivators and rust inhibitors helps reduce sludge and fouling, extending service life and uptime.
Is Relatherm ULT environmentally friendly?
Relatherm ULT is PFAS-free and has a low GWP of 10, supporting sustainability goals without sacrificing performance.
What if Relatherm ULT isn’t a fit for my application?
We offer a comprehensive portfolio of thermal fluids and system cleaners. Speak with a Thermal Fluids Expert to find the best match for your duty cycle and temperature targets.
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