Harmonized Tariff Schedule of the United States · HTS code · HS 8421.91
8421.91.40: Centrifuge parts: Furniture designed to receive the clothes-dryers of subheading 8421.12
Centrifuge parts
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 8421 Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof:
- Parts:
- 8421.91 Of centrifuges, including centrifugal dryers:
- 8421.91.40 Furniture designed to receive the clothes-dryers of subheading 8421.12
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 1
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 7.5%
- Applies to goods from
- China
- In force
- from 1 September 2019
- Legal act
- HTSUS 9903.88.15
Same subheading in other tariffs
8421.91 Of centrifuges, including centrifugal dryers
UK Free Third-country duty 1 tariff line 
EU 1.7% Third-country duty 1 tariff line 
Türkiye 1.7% Third-country duty 1 tariff line 
Canada Free Third-country duty 3 tariff lines 
Mexico Free Third-country duty 2 tariff lines 
Brazil 7.2% – 20% Third-country duty 3 tariff lines · average 13.9% 
Argentina Free – 16% Third-country duty 8 tariff lines · average 13.2% 
Peru Free Third-country duty 1 tariff line 
New Zealand Free Third-country duty 3 tariff lines 
Japan Free Third-country duty 1 tariff line 
Taiwan 3% Third-country duty 1 tariff line 
GCC Free Third-country duty 1 tariff line 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 2 tariff lines 
North Macedonia Free Third-country duty 1 tariff line 
Nigeria 5% Third-country duty 1 tariff line USA lines: 8421.91
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N280525 U.S. CBP
The tariff classification of parts of a centrifuge system from China
Legal notes
In the Harmonized Tariff Schedule of the United States, 8421.91.40 is one of 3 lines under subheading 8421.91, of centrifuges, including centrifugal dryers.
The general duty is free, and quantities are declared in p/st.
For the same subheading, the UK duty is free, the EU duty is 1.7%, the Türkiye duty is 1.7%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 7.2%–20%, the Argentina duty is 0%–16%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is 3%, the GCC duty is free, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
The United States imported goods of subheading 8421.91 worth US$221m in 2024; the largest supplier was Germany, and the United Kingdom ranked 8th with US$7m.
Questions and answers
What is the USA import duty for HTS code 8421.91.40?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is p/st. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 8421.91 as a whole, the largest supplier in 2024 was Germany (US$80m), followed by Canada.
Typical products
- baffles, parts of centrifuges
- perforated plates for gas filters
- rotary drums for liquid or gas filters
Everyday names, not part of the legal text.