Butyl Rubber Unvulcanized Powder from Mexico
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 — 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
• Test for powder flowability to prove primary form
• Document stabilizer levels < permitted thresholds
• Pitfall: powder clumping seen as lumps under 4001