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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Test for powder flowability to prove primary form
• Document stabilizer levels < permitted thresholds
• Pitfall: powder clumping seen as lumps under 4001