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Specialist Materials for Industry and Science



MIDEL 7131

MIDEL 7131 synthetic ester-based dielectric transformer fluid has been successfully serving the global market for over 30 years. Our customers favour MIDEL 7131 for a wide range of applications because of its flexibility, reliability and high performance.


MIDEL eN natural ester-based dielectric transformer fluid is formulated from renewable raw materials to provide the ultimate in environmentally friendly dielectric liquid. MIDEL eN is suitable for use in sealed transformers, located in temperate or indoor locations.

Midel ester-based fluids have been specifically formulated to provide a safe alternative to traditional fluid and dry-type transformers. They offer increased fire safety, greater environmental protection and superior moisture tolerance. In addition MIDEL 7131 has excellent high temperature performance and an enviable track record boasting thousands of projects, many of which are located in demanding or critical areas such as onboard trains and in wind turbine transformers.

Areas of Application for MIDEL 7131

Areas of Application for MIDEL eN



  • Apiezon
  • Metrosil
  • Midel
  • Wolfmet

Products of M&I Materials Ltd.