# United States tariff lines under HS 3910.00

> The United States tariff splits HS 3910.00 (silicones in primary forms) into 1 national line: 3910.00.00.00 (silicones in primary forms). The general (MFN) duty is 3% on this line.

Source: https://border.bot/countries/united-states/hs-codes/391000
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) / [3910.00](https://border.bot/countries/united-states/hs-codes/391000)

## Key facts

- HS subheading: [3910.00](https://border.bot/hs-codes/391000)
- Duty (MFN): 3%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 39: Plastics and articles thereof

## United States lines under 3910.00

The United States tariff splits HS 3910.00 (silicones in primary forms) into 1 national line: 3910.00.00.00 (silicones in primary forms).

The general (MFN) duty is 3% on this line.

- [3910.00.00.00](https://border.bot/countries/united-states/hs-codes/3910000000) Silicones in primary forms. Duty (MFN): 3%

## In other countries

No other national tariff on border.bot has live lines under 3910.00 yet.

- [The Harmonized System text for 3910.00](https://border.bot/hs-codes/391000)

- Previous subheading: [3909.50](https://border.bot/countries/united-states/hs-codes/390950) Polyurethanes
- Next subheading: [3911.10](https://border.bot/countries/united-states/hs-codes/391110) 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

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3910.00?

The United States tariff splits HS 3910.00 (silicones in primary forms) into 1 national line: 3910.00.00.00 (silicones in primary forms).

### What is the duty on HS 3910.00 in the United States?

The general (MFN) duty is 3% on this line.

## 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/391000.json