4005.99.00.00/Butyl Rubber Unvulcanized Powder/Japan

Butyl Rubber Unvulcanized Powder from Japan

Powdered isobutylene-isoprene (butyl) rubber compound unvulcanized, with antioxidants for inner tube production. Under HTS 4005.99.00.00 as other compounded primary powder form, includes permitted stabilizers per note 5(b).

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%

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Import Tips

• Test for powder flowability to prove primary form

• Document stabilizer levels < permitted thresholds

• Pitfall: powder clumping seen as lumps under 4001