Gaskets and similar joints of metal sheeting combined with — HTS 8484
Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
Chapter 84 › Heading 8484
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 8484 is a four-digit product category for certain sealing products used to prevent leakage between joined surfaces. It groups together composite metal-sheet gaskets, gaskets made from two or more metal layers, packaged sets containing gaskets of different compositions, and mechanical seals. These are generally industrial components, not ordinary single-material rubber, plastic, or paper gaskets.
To narrow heading 8484 to an eight-digit HTSUS code, first identify the product type and construction. The detailed subheading commonly distinguishes among composite or layered metal gaskets, packaged assortments, and mechanical seals, with further distinctions often based on the materials, design, or intended form. Review the complete product description, engineering drawings, material breakdown, and packaging—not just the product name—and verify the result against the current HTSUS and any applicable Customs and Border Protection guidance.
What to check
- Confirm that the item is a gasket, gasket assortment, or mechanical seal, rather than a general sealing article made from one material.
- Determine whether the gasket contains metal sheeting combined with another material or has two or more metal layers; document each layer and its function.
- For a packaged set, list every gasket or joint in the package and confirm that they are dissimilar in composition and packaged together as an assortment.
- For a mechanical seal, review its operating design and components, and do not classify it solely by the material of one sealing ring or face.
- Compare the full eight-digit descriptions in the current HTSUS and obtain customs-broker or ruling advice when construction or product function is unclear.
HTS heading 8484 summary
Gaskets and similar joints of metal sheeting combined with 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.
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 |
|---|---|---|---|---|
| 8484.10.00.00 👉 | Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal | 2.5% | Free | 35% |
| 8484.20.00.00 👉 | Mechanical seals | 3.9% | Free | 45% |
| 8484.90.00.00 👉 | Other | 2.5% | Free | 35% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 8484?
Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals. 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.