IIR Butyl Rubber Silica Bale from Mexico
Isobutylene-isoprene rubber (IIR, butyl) bales compounded with silica for inner tube production, unvulcanized primary bales. HTS 4005.10.00.00 covers this as compounded with silica in bulk form.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Bales require airtight packaging certificates to prevent premature oxidation
• Differentiate from oil-extended butyl, which may have different rules
• Audit risk high if not clearly labeled vs. natural rubber bales