Polymers of propylene or of other olefins — HTS 3902
Polymers of propylene or of other olefins, in primary forms
Chapter 39 › Heading 3902
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 3902 is a broad product category for polymers made from propylene or from other olefins, when imported in “primary forms.” Primary forms generally means basic forms such as liquids, pastes, powders, flakes, granules, and similar bulk forms used to make other plastic products. The heading can include materials such as polypropylene and certain other olefin-based polymers, but the exact classification depends on the product’s composition and form.
To reach the correct 8-digit HTSUS code, start with the material and how it is chemically described, then follow the heading’s subheadings and statistical subdivisions. The code may distinguish among polymer types, whether the product is a copolymer or another form of polymer, and characteristics such as density or other specified properties. Review the complete product specification and the legal notes, not just the marketing name.
What to check
- Obtain the supplier’s technical data sheet, safety data sheet, and composition information, including the polymer type and whether it is a homopolymer or copolymer.
- Confirm that the goods are in a primary form, rather than a finished article, film, pipe, or other manufactured plastic product classified elsewhere.
- Read every applicable subheading description and statistical suffix in the current HTSUS; do not stop at the 4-digit heading.
- Check any stated test methods, density ranges, physical characteristics, or composition thresholds against laboratory or supplier data.
- If the formulation is blended, filled, reinforced, recycled, or chemically modified, ask a customs broker or request a binding classification ruling before importing.
HTS heading 3902 summary
Polymers of propylene or of other olefins is a 4-digit product category containing 3 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 3902.20 | Polyisobutylene |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 3902.10.00.00 👉 | Polypropylene | 6.5% | Free | 33.5% |
| 3902.30.00.00 👉 | Propylene copolymers | 6.5% | Free | 2.2¢/kg + 33.5% |
| 3902.90.00 👉 | Other | 6.5% | Free | 2.2¢/kg + 33.5% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3902?
Polymers of propylene or of other olefins, in primary forms. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.