Applications for industrial lubricants

Diathermic oils

Heat transfer systems (diathermic oils) are designed to transport thermal energy away from a heat source by means of a diathermic oil. Systems are designed and components are sized around the physical properties of a new, uncontaminated fluid. The ability of a system to maintain its performance depends on knowing how to keep the fluid in good condition.


The obvious challenge for operators is that the diathermic oil-the lifeblood of the system-is almost as good as new; without proper care, the surfaces where heat exchange occurs will become dirty, thus increasing the energy required to maintain temperature, decreasing productivity.

Thermal oil maintenance

  • When fluid degradation occurs, its initial properties will change and continue to change as the severity of degradation increases.
  • Although no expert can keep diathermic fluid fresh forever, system operators can certainly prolong the preservation of fluid properties by avoiding common threats of degradation and selecting a better fluid for the application.
  • In addition to proper system maintenance, one of the most effective control measures an operator can take to maximize fluid life is to select the correct fluid.

The best diathermic oils

  • There are a myriad of oils on the market, typically synthetic or mineral, each with its own chemical and performance profile that makes it more or less suitable for a specific processing application.
  • Our diathermic oils are 99.9 percent pure oil-based obtained by the patented “Hydro-Treatment” system, which is a process designed to remove impurities.
  • They maintain stability and resistance to ‘oxidation and have a significantly longer service life than other mineral oil-based products on the market.
  • Better oxidation resistance means cleaner, more efficient systems and lower oil additions (lower consumption).

Reference categories for Diathermic plants

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