Paratherm HE HTF is an economical workhorse fluid formulated from highly refined petroleum base stocks for improved performance vs. standard mineral oil heat transfer fluids. It is engineered for high-performance to 600°F (316°C) in closed-loop liquid phase heating systems in a variety of industrial applications. Paratherm HE is NSF HT-1 registered for incidental food contact and is also Kosher approved. It has best-in-class thermal stability with low vapour pressure and high flash point.
Standard industrial grade heat transfer fluids often contain impurities such as asphaltenes, aromatics, and sulfur compounds that tend to discolour the fluid. Paratherm HE is engineered from high purity base stocks and is free of such impurities, evidenced by its nearly water-white appearance. This high purity reduces fouling potential and improves thermal stability. Industry standard stability testing shows Paratherm HE outperforms standard industrial grade heat transfer fluids, forming less low and high boiling compounds upon thermal decomposition.
Paratherm HE also exhibits very low vapour pressure over its operating range, which means improved oxidation resistance in atmospherically vented expansion tanks vs. fluids with higher vapour pressures.
Operating Range for Paratherm HE
Minimum Startup Temperature (300cSt)
Maximum Operating Temperature
37°F / 3°C
630°F / 332°C
Resources & Documents
View the technical data information for Paratherm HE Heat Transfer Fluid
View the Material Safety Data Sheet for Paratherm HE Heat Transfer Fluid
A Case Study with Urgent Plastics for Paratherm HE Heat Transfer Fluid
Extending Fluid Lifetime
When Paratherm fluids are used as recommended they can provide many years of reliable service. Systems using Paratherm fluids should be designed and installed by qualified engineers and should be maintained as any other critical production asset. Fluid oxidation is the leading cause of the most serious maintenance issues associated with closed-loop heat transfer systems– including cold spots, heater coking, plugged pressure sensors and ultimately fluid gelling. Paratherm recommends installation of a nitrogen blanket on the expansion tank to prevent oxidation of the fluid. All systems may benefit from side-stream filtration to promote long-term fluid and system reliability.Fluid Analysis Services
Paratherm offers a comprehensive fluid monitoring service to help keep systems running at their best. Their state-of-the-art laboratory is certified to ISO 9001:2015 and well-equipped to run all critical tests. Annual testing is recommended and can identify system issues before they become catastrophic. The fluid in new systems should be tested within 9 to 12 months of start-up. New fluid in existing systems should be tested within the first month of operation to establish a base line for future testing, and annually thereafter.Replacing Fluid
Replacement should be preceded by analysis of the fluid to determine if cleaning or flushing of the system is recommended prior to introducing new heat transfer fluid. Newly commissioned systems typically do not require cleaning before filling. Paratherm recommends installation of a Y-strainer with a minimum 60-mesh screen up-stream of the pump to catch any residues from manufacturing and construction of system components.Fluid Storage
Barrels and pails should be stored indoors to prevent environmental contamination. If sealed barrels must be left outdoors, provisions should be made to prevent water from pooling on their tops. While unopened pails are considered weatherproof, Paratherm recommends they not be stacked when stored outdoors. If the fluid is below its minimum pumpable temperature, the containers may be moved indoors to warm up before charging into the system. Refer to the product safety data sheet (SDS) for additional handling and storage recommendations.
Speak to us
If you have a big system requirement, Paratherm can fill high-volume systems with Paratherm HE from bulk tanker. Get in touch with the Oil-Store team to request a bulk quotation.