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Transformer Oil

Transformer Oil

Transformer Oil is a specially refined and treated low viscosity mineral oil. It complies with the stringent requirements of IEC 296 / BS 148 Class I and II specification for dielectric fluids. It is non-inhibited, with a high natural resistance to oxidation and breakdown under arcing.

Transformer Oil is subjected to special drying and de-watering processes during manufacture, imparting excellent dielectric strength and good low temperature flow characteristics. Extreme care must be taken in storage and handling, as the material is highly hygroscopic. (This product has a Maximum shelf-life when stored in drums in ‘ideal’ conditions of 6 months.)

Product Code: 14250

Excellent chemical and thermal stability giving long service life.
High dielectric strength ensuring excellent insulation properties.
Good low temperature properties for outdoor installations.
High resistance to oxidation and deposits ensuring excellent circulation and heat transference.


Transformer Oil is recommended as the insulating and cooling medium for all oil filled transformers, switchgear and dashpots for which an oil meeting IEC 296 / BS148 Class I and II is specified.

Please Note: The product images shown are for illustration purposes only and may not be an exact representation of the product.
Pack Sizes
Depending on the range, Rock Oil products are available in multiple sizes, including 400ml aerosols and 1L / 4L / 5L / 20L / 210L / bulk containers.