# United States tariff line 3911.90.70.00: Chlorinated synthetic rubber

> In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3911.90 in heading 39.11 (chapter 39).

Source: https://border.bot/countries/united-states/hs-codes/3911907000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 39](https://border.bot/countries/united-states/hs-codes/39) / [3911.90](https://border.bot/countries/united-states/hs-codes/391190) / [3911.90.70.00](https://border.bot/countries/united-states/hs-codes/3911907000)

## Key facts

- Tariff line: 3911.90.70.00
- Covers: Chlorinated synthetic rubber
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [3911.90](https://border.bot/hs-codes/391190)

## What this line covers

In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber.

Its legal text is “Chlorinated synthetic rubber”, read under “Other”, “Other” and “Other”.

## How it is structured

It falls under HS subheading 3911.90 in heading 39.11 (chapter 39). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 39: Plastics and articles thereof
- Heading 39.11: Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms
- Subheading 3911.90: Other
- Within the subheading: Other
- Within the subheading: Other
- Line 3911.90.70.00: Chlorinated synthetic rubber

## Duty

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

## In other countries

No other national tariff on border.bot has live lines under 3911.90 yet.

- [The Harmonized System text for 3911.90](https://border.bot/hs-codes/391190)

## Other lines under 3911.90

- [3911.90.10.00](https://border.bot/countries/united-states/hs-codes/3911901000) Elastomeric
- [3911.90.15.00](https://border.bot/countries/united-states/hs-codes/3911901500) Poly(nitrilomethanetetraarylnitrilo- [2,4,6-tris-(1-methyethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)- phenyl]-ω-[[[2,6-bis(1-methylethyl)- phenyl]amino]methylene]amino carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methyl- ethyl) homopolymer with polyethylene
- [3911.90.25.00](https://border.bot/countries/united-states/hs-codes/3911902500) Other
- [3911.90.35.00](https://border.bot/countries/united-states/hs-codes/3911903500) 1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester
- [3911.90.45.00](https://border.bot/countries/united-states/hs-codes/3911904500) Other
- [3911.90.91.10](https://border.bot/countries/united-states/hs-codes/3911909110) Thermoplastic
- [3911.90.91.50](https://border.bot/countries/united-states/hs-codes/3911909150) Thermosetting

- Previous line: [3911.90.45.00](https://border.bot/countries/united-states/hs-codes/3911904500) Other
- Next line: [3911.90.91.10](https://border.bot/countries/united-states/hs-codes/3911909110) Thermoplastic

## Frequently asked questions

### What does tariff line 3911.90.70.00 cover in the United States tariff?

In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber.

### What is the general (MFN) duty on 3911.90.70.00 in the United States?

Goods under this line enter 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/3911907000.json