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4002.31.00.00/Prevulcanized Butyl Rubber Paste/Japan

Prevulcanized Butyl Rubber Paste from Japan

Paste form of prevulcanized isobutene-isoprene rubber (IIR) for adhesive applications, explicitly allowed under chapter notes. Classified in 4002.31.00.00 as primary paste form without prohibited vulcanizing agents beyond prevulcanization.

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

• Distinguish prevulcanized latex from fully compounded; provide vulcanization test data

• Label clearly as 'prevulcanized primary form' to match note 5(a) exception