Compounded rubber — HTS 4005
Compounded rubber, unvulcanized, in primary forms or in plates, sheets or strip
Chapter 40 › Heading 4005
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 4005 groups compounded rubber that is still unvulcanized (not cured), when presented in primary forms or as plates, sheets, or strip. “Compounded” means the rubber has been mixed with ingredients such as fillers, pigments, curing agents, or other additives. “Primary forms” can include forms such as blocks, lumps, and similar basic shapes, while plates, sheets, and strip are flatter forms.
To reach the correct 8-digit HTSUS code, first confirm that the product is actually unvulcanized compounded rubber and belongs in heading 4005 rather than a heading for raw rubber, vulcanized rubber, or a finished rubber article. The lower-level provisions generally distinguish products by the rubber material or type and, in some cases, by the form or composition. The product’s technical specifications and the wording of the current HTSUS provisions must be matched carefully; a customs broker or classification specialist may be needed for unusual mixtures or borderline products.
What to check
- Confirm whether the rubber is unvulcanized and compounded, rather than raw rubber, cured rubber, or a finished article.
- Identify the rubber type or material precisely from the supplier’s formulation, technical data sheet, and certificate of analysis.
- Check whether the goods are in a primary form, plate, sheet, or strip, and record relevant dimensions and presentation details.
- Review the full HTSUS hierarchy under heading 4005, including the 6-digit and 8-digit descriptions, instead of choosing from the heading title alone.
- Verify the classification against the current official HTSUS and obtain broker or specialist advice when the formulation, backing, reinforcement, or intended use could affect classification.
HTS heading 4005 summary
Compounded rubber is a 4-digit product category containing 2 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.
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 |
|---|---|---|---|---|
| 4005.10.00.00 👉 | Compounded with carbon black or silica | Free | — | 20% |
| 4005.20.00.00 👉 | Solutions; dispersions other than those of subheading 4005.10 | Free | — | 20% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 4005?
Compounded rubber, unvulcanized, in primary forms or in plates, sheets or strip. 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.