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SITCSection 2
U.S. imports of butadiene rubber (br) in primary forms (SITC 23212) totaled $5.5M in April 2026, traded with 19 countries.
Importers of Butadiene Rubber (BR) in Primary Forms paid $551K in duties in April 2026 — an effective duty rate of 10% on $5.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Butadiene Rubber (BR) in Primary Forms imports of $5.5M in April 2026 ran 16% above the year-to-date monthly average of $4.8M.
Last updated: April 2026 dataPolybutadiene rubber (BR) is a high-cis synthetic elastomer prized for its exceptional abrasion resistance and low-temperature flexibility, making it a critical blending component in truck and passenger-tire sidewalls and golf-ball cores. Its production is highly concentrated among a small number of petrochemical complexes, so supply disruptions in butadiene feedstock markets can create rapid price volatility for downstream compounders. BR is traded in primary forms — bales, crumbs, and pellets — and the specific microstructure (high-cis vs. low-cis) is a key specification that buyers should confirm with suppliers before import.
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No — high-cis and low-cis polybutadiene both classify under the same heading. However, cis-content is a critical commercial specification that should be documented in the purchase contract and certificate of analysis, as it directly affects end-use suitability and can influence customs valuation if unit prices differ significantly between grades.
BR is commonly imported as bales, crumbs, or pellets. All of these qualify as 'primary forms' under SITC 23212, so the physical presentation does not change the classification. Importers should confirm that the product has not been further processed into sheets or strips of a defined thickness, which could shift the classification.
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Monthly import values over time