BIIR Rubber Bale from Mexico
Brominated isobutene-isoprene rubber (BIIR) compressed into rectangular bales for storage and transport, used in pharmaceutical stoppers. HTS 4002.39.00.00 covers this as 'other' primary form bale of halo-butyl rubber, retaining raw material character.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include mill test reports showing compliance with synthetic rubber vulcanization test from Chapter Note 2
• Weigh bales precisely; oversized or irregular shapes risk reclassification as scrap