Lubricants and Heat Transfer FluidsSolutions for Applications
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Heat Transfer Fluids

Phone: +49 (0)208-300 02-50
Fax: +49 (0)208-300 02-33


Phone: +49 (0)208-300 02-40
Fax: +49 (0)208-300 02-77


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Heat transfer fluid from 5°C to 250°C

FRAGOLTHERM® S-250 ist eine Wärmeträgerflüssigkeit auf Basis von Polyglykol, die im Bereich von 5°C bis 250°C eingesetzt wird. Die maximal zulässige Filmtemperatur beträgt 260°C.

Application Area


FRAGOLTHERM® S-250 is suitable for constant operation up to an approx. 260°C film temperature at the heat element. Very good pumpability is guaranteed even at low temperatures, due to the exceptional viscosity behavior. The thermal conductivity is over a wide temperature range constant.

It is used for example in plastic processing machines, mould preheating devices, systems for processing synthetic textile fibres and chemical plants.

FRAGOLTHERM® S-250 is cold water-soluble. This is significant if a system is to be rinsed with water, or parts that have been temperature controlled with the heat transfer fluid In the event of fires breaking out these can be extinguished with water. The expansion tank is generally filled with a nitrogen blanket, in order to prevent oxidation of the product and therefore increase the service life.

FRAGOLTHERM® S-250 is a water-free yet water-soluble synthetic heat transfer fluid from polyaklyene glycol derivatives, which lies in its optimum working range with bulk temperatures of between 100°C and 250°C. Within this temperature range this heat carrier is superior to other heart transfer fluid in terms of keeping the system clean, even if their maximum permissible bulk temperatures are higher.

FRAGOLTHERM® S-250 also contains special anti-ageing agents. Decomposition products are either volatile constituent that are soluble in the heat transfer fluid.

Technical Data

Heat transfer fluids business unit

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