Elastomeric Polyisobutylene Pellets for Tire Inner Liner from Mexico
These pellets are elastomeric polyisobutylene with 97% isobutylene monomer content, designed for compounding into tire inner liners under HTS 3902.20.10.00. Their gas impermeability and elasticity qualify them as primary form elastomers. Supplied unvulcanized for downstream rubber processing.
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 end-use statements if requested by CBP to affirm primary polymer status
• Test for exact monomer composition to avoid 'Other' subheading
• Store in cool, dry conditions to maintain elastomeric properties during transit