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SITCSection 6
U.S. imports of corks and stoppers of natural cork (SITC 63311) totaled $17.8M in April 2026, traded with 10 countries.
Importers of Corks and Stoppers of Natural Cork 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. Corks and Stoppers of Natural Cork imports of $17.8M in April 2026 ran 47% above the year-to-date monthly average of $12.1M.
Last updated: April 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
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.
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Monthly import values over time