Aviation Breathing Oxygen
Oxygen conforming to military specifications (e.g., MIL-PRF-27210) for use in aircraft emergency oxygen systems and pilot breathing masks. Classified in HTS 2804.40.00.00 as pure oxygen gas, not as an aircraft part.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing phosphine or other Chapter 28/29 impurities
Other nonmetal gases or phosphides fall under 2853 if not pure oxygen.
If chemically defined with stabilizers for long-term storage
Stabilized preparations of oxygen may shift to 3824 as chemical preparations.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide military specification certificates and ensure 99.5%+ purity levels
• Use cylinders certified for aviation pressures (typically 1800-2200 psi)
• Common issue: improper valve compatibility causing customs holds
Related Products under HTS 2804.40.00.00
Medical Grade Oxygen USP
High-purity oxygen meeting United States Pharmacopeia (USP) standards for medical applications such as respiratory therapy and anesthesia. Classified under HTS 2804.40.00.00 as elemental oxygen, a nonmetal gas, in its chemically pure form without additives.
Industrial Compressed Oxygen Gas
Pure oxygen gas compressed to high pressure for use in welding, cutting, and metal fabrication processes. Falls under HTS 2804.40.00.00 as chemically defined elemental oxygen, distinct from mixtures or compounds.
Liquid Oxygen LOX
Cryogenically liquefied oxygen at -183°C used for rocket propulsion, medical cryotherapy, and industrial freezing. Remains under HTS 2804.40.00.00 as the elemental nonmetal oxygen regardless of physical state.
High-Purity Research Oxygen-18 Isotope
Enriched oxygen-18 stable isotope gas (>97% purity) for PET imaging tracers and metabolic research. Still classified under HTS 2804.40.00.00 as oxygen, since stable isotopes of nonmetals remain in Chapter 28 unless radioactive.
Welding Oxygen CGA 346 Cylinder
Standard welding-grade oxygen filled in CGA 346 valve cylinders for oxy-acetylene and oxy-fuel applications. Classified as pure oxygen under HTS 2804.40.00.00; cylinder is packaging.
Hyperbaric Oxygen Therapy Gas
Ultra-pure oxygen (>99.99%) for hyperbaric chambers treating decompression sickness and wound healing. HTS 2804.40.00.00 applies to the elemental oxygen gas itself.