# United States tariff lines under HS 4001.21

> The United States tariff splits HS 4001.21 (natural rubber in other forms: Smoked sheets) into 4 national lines: 4001.21.00.10 (grade 1), 4001.21.00.20 (grade 2), 4001.21.00.30 (grade 3) and 4001.21.00.50 (other). Every United States line under 4001.21 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/400121
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 40](https://border.bot/countries/united-states/hs-codes/40) / [4001.21](https://border.bot/countries/united-states/hs-codes/400121)

## Key facts

- HS subheading: [4001.21](https://border.bot/hs-codes/400121)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 40: Rubber and articles thereof

## United States lines under 4001.21

The United States tariff splits HS 4001.21 (natural rubber in other forms: Smoked sheets) into 4 national lines: 4001.21.00.10 (grade 1), 4001.21.00.20 (grade 2), 4001.21.00.30 (grade 3) and 4001.21.00.50 (other).

Every United States line under 4001.21 is free of general (MFN) duty.

- [4001.21.00.10](https://border.bot/countries/united-states/hs-codes/4001210010) Natural rubber in other forms, Smoked sheets, Grade 1. Duty (MFN): free
- [4001.21.00.20](https://border.bot/countries/united-states/hs-codes/4001210020) Natural rubber in other forms, Smoked sheets, Grade 2. Duty (MFN): free
- [4001.21.00.30](https://border.bot/countries/united-states/hs-codes/4001210030) Natural rubber in other forms, Smoked sheets, Grade 3. Duty (MFN): free
- [4001.21.00.50](https://border.bot/countries/united-states/hs-codes/4001210050) Natural rubber in other forms, Smoked sheets, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 4001.21 yet.

- [The Harmonized System text for 4001.21](https://border.bot/hs-codes/400121)

- Previous subheading: [4001.10](https://border.bot/countries/united-states/hs-codes/400110) Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip
- Next subheading: [4001.22](https://border.bot/countries/united-states/hs-codes/400122) Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 4001.21?

The United States tariff splits HS 4001.21 (natural rubber in other forms: Smoked sheets) into 4 national lines: 4001.21.00.10 (grade 1), 4001.21.00.20 (grade 2), 4001.21.00.30 (grade 3) and 4001.21.00.50 (other).

### What is the duty on HS 4001.21 in the United States?

Every United States line under 4001.21 is free of general (MFN) duty.

## 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/400121.json