U.S. imports of Styrene-Butadiene Rubber (SBR) and Carboxylated SBR (XSBR) (SITC 23211) totaled $60.4M in August 2026, imported from 33 countries.
Importers of Styrene-Butadiene Rubber (SBR) and Carboxylated SBR (XSBR) paid $5.1M in duties in August 2026, an average duty rate of 8.45% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Styrene-Butadiene Rubber (SBR) and Carboxylated SBR (XSBR) imports of $60.4M in August 2026 ran 17% above the year-to-date monthly average of $51.7M.
Last updated: August 2026 dataSBR and its carboxylated variant XSBR are the most widely traded synthetic elastomers globally, serving as the dominant polymer in passenger-car tire treads and conveyor belting. Emulsion-polymerized grades (E-SBR) and solution-polymerized grades (S-SBR) carry distinct performance profiles — S-SBR commands a premium in high-performance tire applications due to lower rolling resistance. Importers should note that certain SBR imports from specific origins have been subject to antidumping proceedings, making origin documentation and mill certificates critical for classification and duty assessment.
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859 import shipments a month
Both emulsion-SBR and solution-SBR fall under the same SITC heading 23211, so the polymerization route does not change the classification. However, the grade distinction matters commercially: S-SBR is used in premium tire compounds and typically commands a higher unit value, which can affect customs valuation review.
Yes. Antidumping and countervailing duty orders have been applied to SBR from certain countries in past proceedings. Importers should verify current order status with US Customs and Border Protection and confirm the country of origin carefully, as circumvention through third-country processing has been an enforcement concern.
Basic heading 16 of 239 in section 2
Basic heading 23211 · $60.4M of $3.8B
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Imports · August 2026
origin
South Korea and Mexico together supply 45% of it. South Korea pays 12.1% 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.
ImportsExports
Imports
$60.4MYoY · free account
Exports
$53.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $555.5M of Styrene-Butadiene Rubber (SBR) and Carboxylated SBR (XSBR) and exported $522.8M.
Through August 2026. Source: U.S. Census Bureau.