DOWTHERM 209 Chemical compatibility with O-rings, rubbers, & plastics

Dowtherm 209 heat transfer fluid is a high temperature thermal management fluid used in industrial heating and cooling systems that require stable and efficient heat transfer. This fluid provides strong thermal stability and consistent performance in demanding process environments. In systems that include O-rings, rubber seals, gaskets, and plastic components, compatibility should be evaluated to prevent swelling, softening, or degradation of certain rubber materials. Proper handling, storage, and appropriate protective practices are recommended to maintain safe operation and equipment reliability.

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