HTS heading 3910: Silicones in primary forms
Heading 3910 of the US Harmonized Tariff Schedule covers Silicones in primary forms. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.
Heading 3910 at a glance
- 1 rated tariff line; 0 duty-free at the general (MFN) rate.
- Ad valorem general rates from 3% to 3%.
- Section 301 (products of China): 1 of 1 lines on a list in effect (List 2).
Goods named in this heading (official line texts): Silicones in primary forms.
Subheadings (6-digit)
- 3910.00: Silicones in primary forms (1 line)
All tariff lines in heading 3910
| Line | Description | General | Section 301 (China) | Exclusions |
|---|---|---|---|---|
| 3910.00.00 | Silicones in primary forms | 3% | List 2 +25% |
All of chapter 39 · Chapter 39 rate summary · HTS lookup
General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.
🔔 Get a browser alert when US tariffs change (free, no email, one click to stop).