Transformer oil is primarily used for electrical insulation and heat dissipation inside transformers. During operation, the oil undergoes thermal and electrical stress which gradually reduces its dielectric strength and chemical stability. Once removed from active electrical systems, the oil becomes Used Transformer Oil (UTO).
UTO may contain:
After treatment and purification, UTO can be reused in industrial heating systems, low-grade lubricants, fuel blending, waterproofing products, rubber processing, and other non-critical applications.
Industries often purchase UTO for:
| Parameter | Typical Range |
|---|---|
| Appearance | Dark Brown to Black Liquid |
| Odor | Petroleum/Oily |
| Density @ 15C | 0.85 0.91 g/cm |
| Flash Point | 140C 220C |
| Viscosity | Medium |
| Moisture Content | Variable |
| Dielectric Strength | Reduced compared to fresh oil |
| Sludge Content | Moderate to High |
| Solubility | Insoluble in Water |
| Base Composition | Mineral Hydrocarbon Oil |
UTO is widely used as a low-cost fuel in:
Recycling plants process UTO into:
Used in:
Can be blended into:
Used for:
Originally designed to prevent electrical discharge and short circuits in transformers.
Transfers heat generated inside electrical equipment to maintain operating temperature.
Helps suppress corona discharge and electrical arcing.
Provides lubrication to moving and contact components in some equipment.
After use, it can function as a combustible industrial heating fuel.
UTO is significantly cheaper than fresh industrial oils and furnace fuels.
Can be filtered, regenerated, and reused multiple times.
Provides usable thermal energy in industrial heating applications.
Recycling UTO minimizes hazardous waste disposal and supports sustainability.
Useful across multiple industries including:
Helps conserve petroleum resources through re-refining and reuse.



Price:
Price 40.0 INR / Kilograms
Minimum Order Quantity : 100 Kilograms
Color : Black
Application : Automotive Lubricants
Smell : Fragrant
Viscosity Index : 80120 (at 50C)
Price 120.0 INR / Piece
Minimum Order Quantity : 500 Pieces
Color : Clear, transparent, sedimentfree
Application : Industrial Lubricants
Smell : Stimulus
Viscosity Index : Approx. 12.4 cSt
Price 40 INR / Kilograms
Minimum Order Quantity : 100 Kilograms
Color : Black
Application : Automotive Lubricants
Smell : Fragrant
Price 80.0 INR / Kilograms
Minimum Order Quantity : 500 Kilograms
Color : Dark yellow to brown liquid
Application : Automotive Lubricants
Smell : Stimulus
Viscosity Index : 30 45 cSt