Transformer Oils – 5 Gallon Pail
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Tulstar’s premium transformer oils (T-Oils) are formulated for maximum dielectric strength, oxidation stability, and heat transfer efficiency in electrical transformers and power distribution equipment.
Each 5-gallon pail is pre-filtered and tested to ASTM standards, ensuring optimal performance and long-term reliability for industrial and utility applications.
These oils are suitable for use in:
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Distribution and power transformers
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Oil-filled circuit breakers
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Switchgear and load tap changers
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Electrical testing environments
Key Features
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Dielectric Strength: Exceeds 35 kV (ASTM D877)
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Moisture Content: ≤ 35 ppm (ASTM D1533)
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Low Pour Point: Reliable in cold-weather operation
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High Oxidation Resistance: Extended fluid life and reduced sludge formation
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Non-corrosive: Meets ASTM D1275 corrosion test
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Compatibility: Compatible with most mineral-oil-based transformer oils
Packaging Options
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5-Gallon Pail (19 L) – Stocked Item
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55-Gallon Drum – Available Upon Request
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Bulk Totes & Tanker Loads – Contact for Quote
🧾 Specifications (Typical)
| Property | Method | Typical Value |
|---|---|---|
| Dielectric Breakdown Voltage | ASTM D877 | > 35 kV |
| Viscosity @ 40°C | ASTM D445 | 8.0 cSt |
| Flash Point | ASTM D92 | 145 °C |
| Pour Point | ASTM D97 | −40 °C |
| Neutralization Number | ASTM D974 | 0.01 mg KOH/g |
🛒 Ordering Information
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Price: Inquire for current quote
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Minimum Order: 1 Pail (5 gal)
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Shipping: Ships from Tulsa, OK – Hazmat-certified fulfillment available
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Lead Time: 1–3 business days for in-stock quantities
Applications
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Power generation facilities
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Industrial manufacturing plants
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Transformer service & maintenance providers
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Utilities and electrical cooperatives
Compliance & Quality
Tulstar transformer oils meet or exceed:
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ASTM D3487 (Type I & II)
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IEC 60296 (Ed. 5)
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ISO 9001:2015 Quality Standards
Order by 2PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.
There is €4.99 charge for delivery under €50 Orders. Additional charges will be imposed by our couriers for delivery to remote area, a surcharge may be levied to cover carriage to these areas.
Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.