U.S. imports of Corks and Stoppers of Natural Cork (SITC 63311) totaled $10.8M in August 2026, imported from 13 countries.
Importers of Corks and Stoppers of Natural Cork paid $333K in duties in August 2026, an average duty rate of 3.09% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataHarvested from the bark of Quercus suber oak trees — primarily in Portugal and Spain — natural cork stoppers are a specialized forestry product with tightly controlled grading standards based on porosity, density, and surface defects. Wine and spirits bottlers are the dominant end-use buyers, making this heading sensitive to vintage cycles and beverage industry procurement patterns. Portugal's dominance in global cork production means supply concentration is a recurring risk management consideration for importers.
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117 import shipments a month
Natural cork stoppers are graded by porosity level, surface smoothness, and the presence of lenticels (pores). Higher grades command premium prices for still wines requiring long aging, while lower grades are used for sparkling wines or spirits. Importers typically specify grade in purchase contracts, and customs value declarations should reflect the grade differential.
Processed natural cork stoppers are generally not subject to USDA APHIS phytosanitary inspection because the manufacturing process (boiling, punching, and finishing) eliminates live plant pest risk. However, importers should confirm with APHIS if the cork is in a less-processed form, as raw cork bark may carry different requirements.
Basic heading 331 of 766 in section 6
Basic heading 63311 · $10.8M of $27.0B
Imports · August 2026
origin
Portugal and Italy together supply 99% of it. Bulgaria pays 10.0% duty; Mexico 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
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ImportsExports
Imports
$10.8MYoY · free account
Exports
$411KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $123.7M of Corks and Stoppers of Natural Cork and exported $7.0M.
Through August 2026. Source: U.S. Census Bureau.