Insulating or transformer oils
Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations; waste oils: > Petroleum oils and oils obtained from bituminous minerals (other than crude) and preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations, other than those containing biodiesel and other than waste oils: > Light oils and preparations: > Other: > Mixtures of hydrocarbons not elsewhere specified or included, which contain by weight not over 50 percent of any single hydrocarbon compound > Insulating or transformer oils
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2710.12.45.45
Transformer Insulating Oil Type II
This is a highly refined mineral oil specifically formulated for use in electrical transformers, containing over 70% petroleum oils with less than 50% of any single hydrocarbon. It meets the criteria for light oils under 2710.12 as 90% or more distills at 210°C, and is classified under 2710.12.4545 due to its function as an insulating or transformer oil. The oil provides dielectric insulation and cooling in high-voltage transformers.
Electrical Insulating Oil for Power Transformers
A naphthenic-based insulating oil designed for power distribution transformers, consisting of petroleum distillates with no single hydrocarbon over 50% by weight. Classified in 2710.12.4545 as a light oil preparation (>90% distill at 210°C) serving as transformer oil for insulation and heat dissipation. It complies with IEEE C57.106 standards for electrical performance.
Synthetic Blend Transformer Oil
A blend of highly refined petroleum oils (>70% content) with synthetic additives, used in high-performance transformers where no single hydrocarbon exceeds 50%. It qualifies as light oils under 2710.12 (distillation >90% at 210°C) and specifically as insulating oil in 2710.12.4545. Provides superior oxidation stability for long-term transformer operation.
High-Voltage Switchgear Insulating Oil
Refined mineral oil for insulating bushings and switchgear in high-voltage applications, with petroleum oils >70% and hydrocarbon mixtures <50% single compound. As a light oil (90%+ distill at 210°C), it fits 2710.12.4545 for insulating/transformer oils. Ensures arc quenching and dielectric strength in electrical substations.
Circuit Breaker Insulating Oil
Specialty petroleum oil for oil-immersed circuit breakers, featuring >70% petroleum content and balanced hydrocarbon mix (<50% any single). Meets light oil distillation test for 2710.12 and insulating function for .4545. Critical for interrupting high currents safely in electrical grids.
Naphthenic Transformer Fluid
Low-sulfur naphthenic insulating fluid for distribution transformers, >70% petroleum oils with no dominant hydrocarbon (>50%). Light oil per ISO 3405, classified 2710.12.4545 as transformer oil. Offers excellent low-temperature performance and gas absorption properties.
Askarel-Replacement Insulating Oil
Non-PCB mineral oil replacing old askarels in transformers, with >70% petroleum and <50% single hydrocarbon compliance. Qualifies as insulating light oil under 2710.12.4545 due to distillation profile. Used for retrofitting legacy electrical equipment.