Silicones in primary forms
1 declarable lines
Heading 3910 covers silicones in primary forms. It has one declarable line, 3910.00.00.00, and no subheading split by type or form.
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
How to choose the right subheading
- Confirm the product is a silicone, meaning a polysiloxane, not a finished rubber or plastic article.
- Check the physical form: liquid, paste, gum, powder, granules, flakes, or similar bulk primary form.
- Determine whether it is sold as a raw material for further processing rather than as a finished good.
- Check whether it has been cured, molded, cut, or combined into a finished article, because that moves it out of heading 3910.
- Use the single declarable line 3910.00.00.00 unless a later processing step changes the article.
Often confused with
- Heading 3924Cured silicone baking mat
Finished kitchenware of plastics is classified outside the primary forms heading.
- Heading 3917Silicone tubing or hose
Tubes and pipes of plastics have their own heading.
- Heading 3919Self-adhesive silicone tape
Self-adhesive flat shapes of plastics are classified in heading 3919.
- Heading 3920Noncellular silicone sheet
Plates and sheets of plastics are classified outside primary forms.
- Heading 3926Molded silicone gasket
Finished articles of plastics are classified in heading 3926 when not specified elsewhere.
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%.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.