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Specialist Materials for Industry and Science

Fire Safety

Fire Safety

Our synthetic ester MIDEL 7131 has an impeccable 100% fire safety record spanning over three decades.

Unlike its mineral oil alternatives, MIDEL 7131 has a high fire point, making it much safer for use in high risk areas such as buildings and tunnels.

Experience has proved that transformer fires can be particularly unforgiving, especially in enclosed spaces such as those mentioned above. They can spread at frightening speeds, putting the lives of workers in danger and causing extensive damage to property.

Unfortunately, these potentially catastrophic fires are becoming all too common in modern power distribution networks, and companies have a duty to guard against such incidents.

If you are not willing to expose your project to unnecessary fire risks, MIDEL 7131 is the ideal transformer oil option. Its excellent track record and superior fire resistive properties continue to make it the fire safe fluid of choice around the world, ahead of alternatives such as dry-type transformers.

Fire Safe Properties of MIDEL 7131

Mineral Oil Tranformer Fire

MIDEL 7131’s fire safety features are recognised by European industry standards, and these accolades have helped enhance its reputation for offering increased protection against fire.

The fire safety properties of our synthetic transformer fluid include:

  • 100% fire safety record
  • High fire point (>300°C)
  • Classified as K-class to IEC 61039
  • FM Global® and UL® listed transformer fluid
  • ATEX Certification
  • Established resistance to ignition
  • Self extinguishing
  • Potentially lower fire protection costs
  • Certified as safe by EN 45545, which stipulates only K-class fluids can be used on rolling stock

Contact Midel

If you would like more information on why MIDEL 7131 is the perfect transformer oil choice, you can contact us online and we will be happy to answer your questions. We can also tell you about the fire safety properties of our natural transformer fluid MIDEL eN.

Alternatively, our documents could provide detailed answers to any queries you may have.



  • Apiezon
  • Metrosil
  • Midel
  • Wolfmet

Products of M&I Materials Ltd.