</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
4002.31.00.00/IIR Butyl Rubber Lumps for Seals/Japan

IIR Butyl Rubber Lumps for Seals from Japan

Irregular lumps of unprocessed isobutene-isoprene (butyl) rubber for industrial seal production. Meets HTS 4002.31.00.00 as primary bulk form per chapter note 3(b), unadulterated synthetic rubber.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Calculate with your customs valueVerify classification with AI

Import Tips

• Test for essential character retention; small antioxidants permitted per note 5(b)