U.S. imports of Vulcanized Rubber Plates, Sheets & Strip (Noncellular) (HS 400821) totaled $23.6M in August 2026, imported from 52 countries.
Importers of Vulcanized Rubber Plates, Sheets & Strip (Noncellular) paid $2.4M in duties in August 2026, an average duty rate of 10.23% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataNoncellular vulcanized rubber in flat plate, sheet, and strip form is a foundational industrial semi-finished material used across gasket manufacturing, flooring, conveyor systems, and protective lining applications. Unlike cellular (foam) rubber, noncellular grades offer solid cross-sections with predictable compression and abrasion resistance, making specification of hardness and compound critical at entry. The entire US tariff schedule for this heading consolidates into a single 10-digit line, 4008210000, simplifying classification but placing the burden of compound and grade documentation on the importer. Products subject to Section 301 measures from certain origins require careful country-of-origin determination when rubber compounding and slitting occur in multiple countries.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.9K import shipments a month
Noncellular rubber has a solid, non-foamed cross-section, while cellular rubber contains gas-filled voids (foam or sponge structure). CBP distinguishes them by physical examination and density testing; misclassifying a cellular product under 4008210000 can result in a reclassification to Chapter 40 headings covering cellular rubber, with different duty implications.
CBP applies a substantial transformation test: compounding raw rubber into a vulcanized compound is generally considered the origin-conferring process, not subsequent slitting or cutting to dimension. Importers should retain mill certificates, compound formulation records, and processing invoices to substantiate the claimed origin, particularly where Section 301 tariffs may apply.
Subheading 1 of 4 in heading 4008
Subheading 400821 · $23.6M of $35.5M
ImportsExports
Imports
$23.6MYoY · free account
Exports
$17.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $284.0M of Vulcanized Rubber Plates, Sheets & Strip (Noncellular) and exported $215.5M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and India together supply 52% of it. China pays 37.3% duty; Mexico <0.1%.
customs district
destination
entry
rate provision · imports
19.0% enters free of duty; duty collected equals 10.23% of imports for consumption.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 4008210000 | Plates of Vulcanized Rub, of Noncellular Rubber | $23.6M | 10.23% | 80.95% | $2.4M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4008210000 | Plates of Vulcanized Rub, of Noncellular Rubber | $17.3M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Trade Directory
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