Unvulcanized Butyl Rubber Blocks from China
> Irregular blocks of unvulcanized isobutene-isoprene (butyl) rubber for custom molding. Blocks are a primary bulk form under Chapter Note 3(b), and the rubber is uncompounded, classifiable under tariff item 4002.31.00.
Duty Rate — China → Canada
0%
Import Tips
• > Confirm the blocks are not cut to shape or further worked, as that would affect classification
• Provide the manufacturer's specification to show the rubber is raw and uncompounded
• Ensure the blocks are free of any fabric or metal inserts