# United States tariff line 8421.29.00.15: Oil-separation equipment

> In the United States tariff, line 8421.29.00.15 covers filtering or purifying machinery and apparatus for liquids, oil-separation equipment. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8421.29 in heading 84.21 (chapter 84).

Source: https://border.bot/countries/united-states/hs-codes/8421290015
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8421.29](https://border.bot/countries/united-states/hs-codes/842129) / [8421.29.00.15](https://border.bot/countries/united-states/hs-codes/8421290015)

## Key facts

- Tariff line: 8421.29.00.15
- Covers: Filtering or purifying machinery and apparatus for liquids, oil-separation equipment
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [8421.29](https://border.bot/hs-codes/842129)

## What this line covers

In the United States tariff, line 8421.29.00.15 covers filtering or purifying machinery and apparatus for liquids, oil-separation equipment.

Its legal text is “Oil-separation equipment”, read under “Filtering or purifying machinery and apparatus for liquids”, “Other” and “Other”.

## How it is structured

It falls under HS subheading 8421.29 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 8421.29: Filtering or purifying machinery and apparatus for liquids
- Within the subheading: Other
- Within the subheading: Other
- Line 8421.29.00.15: Oil-separation equipment

## Duty

Goods under this line enter free of general (MFN) duty.

The rate is published on 8421.29.00.

## In other countries

No other national tariff on border.bot has live lines under 8421.29 yet.

- [The Harmonized System text for 8421.29](https://border.bot/hs-codes/842129)

## Other lines under 8421.29

- [8421.29.00.05](https://border.bot/countries/united-states/hs-codes/8421290005) Refrigerant recovery and recycling units
- [8421.29.00.40](https://border.bot/countries/united-states/hs-codes/8421290040) Hydraulic fluid power filters, rated at 1,000 kPa or greater
- [8421.29.00.65](https://border.bot/countries/united-states/hs-codes/8421290065) Other

- Previous line: [8421.29.00.05](https://border.bot/countries/united-states/hs-codes/8421290005) Refrigerant recovery and recycling units
- Next line: [8421.29.00.40](https://border.bot/countries/united-states/hs-codes/8421290040) Hydraulic fluid power filters, rated at 1,000 kPa or greater

## Frequently asked questions

### What does tariff line 8421.29.00.15 cover in the United States tariff?

In the United States tariff, line 8421.29.00.15 covers filtering or purifying machinery and apparatus for liquids, oil-separation equipment.

### What is the general (MFN) duty on 8421.29.00.15 in the United States?

Goods under this line enter free of general (MFN) duty. The rate is published on 8421.29.00.

## 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:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/8421290015.json