Gaseous Diffusion Barrier Modules
Porous membrane modules that enable selective diffusion of lighter isotopes through microscopic pores in UF6 gas streams. Classified in HTS 8401.20.00.00 as parts of isotopic separation apparatus.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard industrial gas filters without isotopic separation specs
Generic diffusion filters go to filtering machinery in 8421.
If imported as raw ceramic porous media
Unprocessed ceramic articles classify under Chapter 69 before apparatus assembly.
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 pore size distribution and permeability test certificates
• Track nickel or aluminum alloy content for dual-use material controls
Related Products under HTS 8401.20.00.00
Gas Centrifuge for Uranium Enrichment
A high-speed rotating machine that uses centrifugal force to separate uranium isotopes U-235 and U-238 in gaseous UF6 form. It falls under HTS 8401.20.00.00 as specialized apparatus for isotopic separation in nuclear fuel production.
Calutron Electromagnetic Separator
Electromagnetic device that ionizes material and uses magnetic fields to separate isotopes based on mass differences, historically used for uranium. It is apparatus for isotopic separation under HTS 8401.20.00.00.
UF6 Gas Handling Manifold for Centrifuges
Specialized valve and piping assembly for feeding, enriching, and withdrawing uranium hexafluoride gas in centrifuge cascades. Parts thereof under HTS 8401.20.00.00 for isotopic separation apparatus.
Laser Isotope Separation System
An apparatus using precisely tuned lasers to selectively excite and ionize specific isotopes for separation, often for heavy water or uranium. Classified under HTS 8401.20.00.00 for its dedicated isotopic separation function.
Cascade Gas Centrifuge Assembly
A series-connected bank of gas centrifuges operating in tandem to achieve high isotopic separation factors for UF6 enrichment. Falls under HTS 8401.20.00.00 as integrated isotopic separation machinery.
Heavy Water Distillation Column
Fractional distillation apparatus designed for separating deuterium (H2) from protium (H1) in water vapor streams via boiling point differences. Under HTS 8401.20.00.00 for isotopic separation machinery.