Polyisobutylene Tire Inner Liner Resin from United States
High molecular weight polyisobutylene resin used in butyl rubber compounding for tire inner liners, qualifying for tariff item 3902.20.00 as polyisobutylene in primary pellet form. It provides air retention properties when compounded.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the resin is not pre-blended with other elastomers
• Provide the isobutylene content and molecular weight data
• Verify the product is in primary form, not as a compounded rubber