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HSChapter 45
U.S. imports of natural cork corks and stoppers (HS 450310) totaled $17.8M in April 2026, traded with 10 countries.
Importers of Natural Cork Corks and Stoppers paid $1.7M in duties in April 2026 — an effective duty rate of 9.6% on $17.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Natural Cork Corks and Stoppers imports of $17.8M in April 2026 ran 47% above the year-to-date monthly average of $12.1M.
Last updated: April 2026 dataPortugal dominates global supply of natural cork stoppers, reflecting that country's vast cork oak forests, and Italy and France are secondary sources — a geographic concentration that makes harvest cycles and Iberian weather a recurring supply-chain variable for wine and spirits importers. The US tariff schedule subdivides this heading by taper geometry and maximum diameter, with tapered stoppers exceeding 19 mm in maximum diameter split across several 10-digit lines (4503102000, 4503103000, 4503104000) and a catch-all line (4503106000) for other natural cork closures. Buyers should confirm whether their product's taper angle and diameter measurements place it in a specific dimensional subheading or the NESOI basket, as misclassification between lines is a common audit finding. Natural cork's oxygen-transmission properties and TCA-taint risk are specification factors that affect both product acceptance and supplier qualification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US schedule distinguishes tapered stoppers with a maximum diameter over 19 mm from those at or below that threshold, and further splits them by additional dimensional criteria. Importers should measure both the taper angle and the maximum diameter of each SKU and match those specifications to the applicable 10-digit line (4503102000, 4503103000, or 4503104000) before filing entry. When the product does not fit a dimensional subheading, 4503106000 (NESOI) applies.
Portugal hosts the majority of the world's cork oak (Quercus suber) forests and has a deeply established processing industry, giving it a structural cost and quality advantage. This concentration means US importers are exposed to supply disruptions from Iberian drought, bark-harvest cycles (trees are stripped roughly every nine years), and logistics bottlenecks at Portuguese ports.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 4503106000 | CORKS AND STOPPERS OF NATURAL CORK, NESOI | $13.3M | 9.60% | $1.3M |
| 4503104000 | NAT CORK/STOPPERS NESOI TAPERD OV 19MM MAX DIAMETR | $3.4M | 9.47% | $315K |
| 4503103000 | CORK/STOPPERS NAT CORK TAPERED OV 19MM MAX DIAMETR | $867K | 9.29% | $81K |
| 4503102000 | NAT CORK/STOPPER TAPER OV 19MM, DIAMETER NOV 19 MM | $251K | 10.00% | $25K |
CORKS AND STOPPERS OF NATURAL CORK, NESOI
NAT CORK/STOPPERS NESOI TAPERD OV 19MM MAX DIAMETR
CORK/STOPPERS NAT CORK TAPERED OV 19MM MAX DIAMETR
NAT CORK/STOPPER TAPER OV 19MM, DIAMETER NOV 19 MM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4503100000 | CORKS AND STOPPERS OF NATURAL CORK | $646K |
CORKS AND STOPPERS OF NATURAL CORK
28.1K kg
BLOCKS/PLATES/SHEETS/TILE/DISKS ETC OF AGGLOM CORK
HS 450410
AGGLOMERATED CORK & ARTICLES OF AGGLOM CORK, NESOI
HS 450490
WASTE CORK; CRUSHED, GRANULATED OR GROUND CORK
HS 450190
NATURAL CORK DEBACK/RGH SQD IN BLKS/SHEETS/STRIPS
HS 450200
NATURAL CORK, RAW OR SIMPLY PREPARED
HS 450110
ARTICLES OF NATURAL CORK, NESOI
HS 450390
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $11.6M | $588K | -$11.1M |
| Kentucky | $3.2M | -- | -$3.2M |
| Pennsylvania | $2.2M | -- | -$2.2M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| OAKLAND, CA | $8.2M | -- | -$8.2M |
| NORFOLK-NEWPORT NEWS, VA | $3.6M | -- | -$3.6M |
| JFK INTERNATIONAL AIRPORT, NY | $1.5M | -- | -$1.5M |