United States tariff line 8421.39.01.40: Gas separation equipment
Last updated
Key facts
- Tariff line
- 8421.39.01.40
- Covers
- Filtering or purifying machinery and apparatus for gases, gas separation equipment
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 8421.39
Summary
In the United States tariff, line 8421.39.01.40 covers filtering or purifying machinery and apparatus for gases, gas separation equipment. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8421.39 in heading 84.21 (chapter 84).
What this line covers
In the United States tariff, line 8421.39.01.40 covers filtering or purifying machinery and apparatus for gases, gas separation equipment.
Its legal text is “Gas separation equipment”, read under “Filtering or purifying machinery and apparatus for gases”, “Other” and “Other”.
How it is structured
It falls under HS subheading 8421.39 in heading 84.21 (chapter 84). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 84
- Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.21
- Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof
- Subheading 8421.39
- Filtering or purifying machinery and apparatus for gases
- Within the subheading
- Other
- Within the subheading
- Other
- Line 8421.39.01.40
- Gas separation equipment
Duty
Goods under this line enter free of general (MFN) duty.
The rate is published on 8421.39.01.
Other lines under 8421.39
- 8421.39.01.05For machine tools of headings 8456 through 8465, inclusive
- 8421.39.01.15Other
- 8421.39.01.20Electrostatic precipitators
- 8421.39.01.30Other
- 8421.39.01.60Pneumatic fluid power filters, rated at 550 kPa or greater
- 8421.39.01.90Other
In other countries
No other national tariff on border.bot has live lines under 8421.39 yet.
Frequently asked questions
What does tariff line 8421.39.01.40 cover in the United States tariff?
In the United States tariff, line 8421.39.01.40 covers filtering or purifying machinery and apparatus for gases, gas separation equipment.
What is the general (MFN) duty on 8421.39.01.40 in the United States?
Goods under this line enter free of general (MFN) duty. The rate is published on 8421.39.01.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: