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HSChapter 45
U.S. imports of agglomerated cork blocks, plates, sheets, tiles, and disks (HS 450410) totaled $10.4M in April 2026, traded with 21 countries.
Importers of Agglomerated Cork Blocks, Plates, Sheets, Tiles, and Disks paid $913K in duties in April 2026 — an effective duty rate of 8.9% on $10.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Agglomerated Cork Blocks, Plates, Sheets, Tiles, and Disks imports of $10.4M in April 2026 ran 36% above the year-to-date monthly average of $7.6M.
Last updated: April 2026 dataAgglomerated cork — manufactured by bonding cork granules or powder under heat and pressure, with or without added binders — serves as a primary input for thermal and acoustic insulation, flooring, and wall-covering applications in the construction industry. Portugal and Spain together account for the bulk of US imports, a reflection of their integrated cork processing sectors, though China has become a notable supplier of finished floor and wall coverings. The US schedule draws meaningful distinctions among end-use forms: vulcanized rubber-cork sheet (4504101000), compressed insulation board (4504102000), floor coverings (4504103000), reinforced wall coverings (4504104000), and agglomerated cork stoppers and disks (4504104500, 4504104700) each carry their own 10-digit line, making the product's physical form and intended application the controlling classification factors.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Classification is based on the product's objective characteristics at the time of importation, not the end buyer's intended use. If the product is physically identical regardless of application, the importer should assess whether its dimensions, surface finish, and construction align more closely with floor coverings (4504103000) or wall coverings (4504104000). When the product genuinely cannot be distinguished by physical characteristics, a binding ruling request to CBP is the recommended path.
Heading 4503 covers stoppers made from solid natural cork, while heading 4504 covers those made from agglomerated cork — granules or powder bonded together. Agglomerated cork stoppers in this heading (4504104500 and 4504104700) are typically used for sparkling wines or spirits where consistent compression and gas permeability are engineered rather than natural. The material composition, not the shape, is the primary classification determinant.
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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 |
|---|---|---|---|---|
| 4504104500 | STOPPER NOT TAPER AGGLOMERATD CORK LENGTH GT DMTR | $7.1M | 7.89% | $558K |
| 4504105000 | BLOCKS, PLATES, SHEETS, TILE ETC NESOI AGGLOM CORK | $1.2M | 12.04% | $140K |
| 4504103000 | FLOOR COVERINGS OF AGGLOMERATED CORK | $1.1M | 10.62% | $115K |
| 4504101000 | VULCANIZED SHEET/SLAB GROUND/PULVERIZD CORK/RUBBER | $778K | 10.07% | $78K |
| 4504102000 | INSULATION, COATED OR NOT COATED, COMPRESSED CORK | $182K | 9.16% | $17K |
| 4504104700 | CORKS/STOPPERS/DISKS/WAFERS, ETC AGGLOM CORK NESOI | $36K | 20.18% | $4K |
| 4504104000 | WALLCOVERINGS, REINFORCED, OF AGGLOMERATED CORK | $21K | 11.85% | $2K |
STOPPER NOT TAPER AGGLOMERATD CORK LENGTH GT DMTR
BLOCKS, PLATES, SHEETS, TILE ETC NESOI AGGLOM CORK
FLOOR COVERINGS OF AGGLOMERATED CORK
VULCANIZED SHEET/SLAB GROUND/PULVERIZD CORK/RUBBER
INSULATION, COATED OR NOT COATED, COMPRESSED CORK
CORKS/STOPPERS/DISKS/WAFERS, ETC AGGLOM CORK NESOI
WALLCOVERINGS, REINFORCED, OF AGGLOMERATED CORK
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4504100000 | BLOCKS/PLATES/SHEETS/TILE/DISKS ETC OF AGGLOM CORK | $318K |
BLOCKS/PLATES/SHEETS/TILE/DISKS ETC OF AGGLOM CORK
35.5K kg
CORKS AND STOPPERS OF NATURAL CORK
HS 450310
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 | $7.3M | $44K | -$7.2M |
| Wisconsin | $882K | $106K | -$776K |
| Georgia | $452K | -- | -$452K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| OAKLAND, CA | $5.9M | -- | -$5.9M |
| NEWARK, NJ | $1.2M | -- | -$1.2M |
| NORFOLK-NEWPORT NEWS, VA | $1.1M | -- | -$1.1M |