Stoppers — HTS 8309
Stoppers, caps and lids (including crown corks, screw caps and pouring stoppers), capsules for bottles, threaded bungs, bung covers, seals and other packing accessories, and parts thereof, of base metal
Chapter 83 › Heading 8309
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 8309 is a broad product category for certain packaging closures and related accessories made of base metal. It groups items such as crown corks, screw caps, pouring stoppers, bottle capsules, threaded bungs, bung covers, seals, other packing accessories, and their parts. “Base metal” generally refers to common industrial metals such as aluminum, iron, or steel, rather than precious metals.
To narrow a product to an 8-digit HTSUS code, first confirm that heading 8309 fits the item’s function and construction. Then follow the subheadings and tariff provisions that separate products by type, design, material, or other stated characteristics. Review the full legal text, including indentation, punctuation, section and chapter notes, and any applicable statistical suffix description; the correct code depends on the product’s actual features, not only its marketing name.
What to check
- Identify the item’s primary function: closure, capsule, bung, seal, packing accessory, or part.
- Confirm the constituent material and construction, including whether the item is aluminum, iron or steel, or another base metal and whether nonmetal components affect classification.
- Compare the product’s physical design with the wording of each applicable 8-digit provision; check dimensions, threading, fit, and method of closure when the text distinguishes them.
- Use product drawings, specifications, photographs, bills of materials, and samples to support the classification decision.
- Verify the current HTSUS text and notes, and seek a customs broker or binding ruling when the wording or product design creates uncertainty.
HTS heading 8309 summary
Stoppers 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 |
|---|---|---|---|---|
| 8309.10.00.00 👉 | Crown corks (including crown seals and caps), and parts thereof | Free | — | 45% |
| 8309.90.00 👉 | Other | 2.6% | Free | 45% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 8309?
Stoppers, caps and lids (including crown corks, screw caps and pouring stoppers), capsules for bottles, threaded bungs, bung covers, seals and other packing accessories, and parts thereof, of base metal. 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.