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Description
RELATHERM ULT - Ultra Low-Temperature Heat Transfer Fluid | -100°C ~ 65°C
Relatherm ULT is an extended-life ultra-low-temperature heat transfer fluid engineered for chillers, cryogenic equipment, and demanding low-temperature thermal systems. With a usable range from −100°C (−148°F) to 65°C (150°F), it provides reliable sub-zero pumpability and can support both cooling and mild heating applications.
Formulated from high-purity base fluids with advanced additives, Relatherm ULT provides strong oxidation resistance to minimize sludge and heat-surface fouling. This helps extend fluid service intervals, reduce maintenance requirements, and support reliable operation in demanding thermal applications.
Relatherm ULT is also formulated with an environmental focus, providing a PFAS-free formulation and a low Global Warming Potential (GWP) of 10. Its wide operating temperature range makes it suitable for process chillers, cryogenic equipment, low-temperature reactors, and thermal loops.
−100°C to 65°C Ultra-Low Temperature PFAS-Free Low GWP 10
Temperature Bandwidth: −100°C to 65°C — supports true ultra-low-temperature cooling and dual-use thermal applications.
Pumpability: Designed for sub-zero operation — helps maintain reliable fluid circulation and protect pumps and seals.
Oxidation Control: Advanced antioxidant package — helps minimize sludge and fouling for extended fluid life and reduced downtime.
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Nationwide 1-2 day shipping.
Nationwide 1-2 day shipping.
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US-based service & spares.
US-based service & spares.
Why this Relatherm ULT Heat Transfer Fluid?
- Ultra-low temperature performance — supports process cooling down to −100°C (−148°F) with reliable pumpability.
- Dual-use capability — the wide −100°C to 65°C operating band supports both cooling and mild heating applications.
- Maximum oxidation protection — advanced additives help reduce sludge and heat-surface fouling for longer operating intervals.
- Extended fluid life — engineered for longevity under proper operating conditions, helping reduce maintenance and downtime.
- ESG-minded formulation — PFAS-free with a low GWP of 10 for applications where environmental impact is an important consideration.
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Get fluid selection guidance, application support, and integration information for your chiller, cryogenic system, or thermal loop.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | 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-temperature reactors, thermal loops |
| Service Life | Extended versus conventional ultra-low-temperature fluids under proper operating conditions |
| Typical Appearance | Clear, low-viscosity thermal fluid |
| Temperature Range | −100°C to 65°C |
| Cooling Capability | Ultra-low-temperature process cooling |
| Heating Capability | Dual-use operation for cooling and mild heating |
| PFAS Status | PFAS-Free |
| Global Warming Potential | GWP = 10 |
| Recommended Equipment | Chillers, cryogenic equipment, low-temperature reactors, and thermal loops |
| Fluid Type | Ultra-low-temperature heat transfer fluid |
| Pumpability | Designed for reliable sub-zero fluid circulation |
| Environmental Consideration | PFAS-free formulation with low GWP |
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We’ll help spec the right equipment for your thermal application.
FAQ
How cold can Relatherm ULT safely operate?
Relatherm ULT has a minimum recommended use temperature of −100°C (−148°F), providing reliable low-temperature circulation within its specified operating range.
Can Relatherm ULT be used for both cooling and heating?
Yes. Relatherm ULT has a wide operating band of −100°C to 65°C, allowing it to function as a dual-use thermal fluid for applications requiring both cooling and mild heating.
What protects Relatherm ULT against oxidation and sludge formation?
Relatherm ULT uses a sophisticated two-stage antioxidant package with metal deactivators and rust inhibitors to help minimize sludge and fouling and extend fluid service life.
Is Relatherm ULT environmentally friendly?
Relatherm ULT is PFAS-free and has a low Global Warming Potential (GWP) of 10, supporting applications where environmental considerations are important.
Important Shipping Notice!
DISCLAIMER:
All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.
Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.
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