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4002.20.00.00/Synthetic Isoprene-Butadiene Rubber (SIBR)/Canada

Synthetic Isoprene-Butadiene Rubber (SIBR) from Canada

BR copolymerized with small isoprene for tire treads, in granular primary form. Classifies under HTS 4002.20.00.00 if predominantly butadiene rubber meeting BR criteria.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Monomer ratio analysis required to confirm BR dominance over ISR classification

• Vulcanization compliance testing essential for copolymer synthetic rubber status