# HS code 8484.20: Mechanical seals

> HS code 8484.20 covers mechanical seals. It sits in heading 84.84 (gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.84 are classified under 8484.10 (gaskets or similar joints of metal sheeting combined with other material or of two or more layers of metal) and 8484.90 (other). National tariff lines under 8484.20 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/848420
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 84](https://border.bot/hs-codes/84) / [84.84](https://border.bot/hs-codes/8484) / [8484.20](https://border.bot/hs-codes/848420)

## Key facts

- HS code: 8484.20
- Covers: Mechanical seals
- Heading: [84.84: Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals](https://border.bot/hs-codes/8484)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://border.bot/hs-codes/84)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/848420)

## What this code covers

HS code 8484.20 covers mechanical seals.

The legal text of the subheading is “Mechanical seals”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.84 are classified under 8484.10 (gaskets or similar joints of metal sheeting combined with other material or of two or more layers of metal) and 8484.90 (other).

- [8484.10](https://border.bot/hs-codes/848410) Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal
- [8484.90](https://border.bot/hs-codes/848490) Other

## How it is structured

8484.20 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8484, are heading 84.84; the last two, 20, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.84: Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
- Subheading 8484.20: Mechanical seals

## In other countries

National tariff lines under 8484.20 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/848420): 1 line, used by 1 other country

- Previous subheading: [8484.10](https://border.bot/hs-codes/848410) Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal
- Next subheading: [8484.90](https://border.bot/hs-codes/848490) Other

## Frequently asked questions

### What does HS code 8484.20 cover?

HS code 8484.20 covers mechanical seals.

### Which heading and chapter is HS code 8484.20 in?

HS code 8484.20 is in heading 84.84 (gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.84 classified when 8484.20 doesn’t fit?

Other goods of heading 84.84 are classified under 8484.10 (gaskets or similar joints of metal sheeting combined with other material or of two or more layers of metal) and 8484.90 (other).

### Which countries’ tariffs list national lines under HS code 8484.20?

National tariff lines under 8484.20 are live on border.bot for the United States (1 line, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/848420.json