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HTSUS, United States

3910.00.00.00

Silicones in primary forms

Classification path

  1. Silicones in primary forms

Rates of duty

General (MFN)
3%
Column 2Cuba, North Korea, Russia, Belarus
25%
Unit of quantity
kg

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, K, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

About heading 3910

Silicones in primary forms

Heading 3910 covers silicones in primary forms. It has one declarable line, 3910.00.00.00, and no subheading split by type or form.

Full guide to heading 3910

Products in this heading

  • Silicone base oil
  • Polydimethylsiloxane fluid
  • Silicone gum
  • Silicone resin in powder form
  • Silicone elastomer base compound
  • Silicone emulsion in primary form
  • Silicone paste in bulk form

Frequently asked questions

What is the HTS code for silicone oil in primary forms?

Silicone oil in primary forms is classified under 3910.00.00.00 and carries a general (MFN) rate of 3%.

What is the duty on silicones in primary forms?

The general (MFN) rate for 3910.00.00.00 is 3%.

How do I classify silicone resin powder?

Silicone resin in powder form is a primary form and is classified under 3910.00.00.00 at a general (MFN) rate of 3%.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 3910.00.00.00: Silicones in primary forms, 3% duty | HTSBase