IIR Rubber Lump Blocks from Japan
Irregular lump blocks of isobutene-isoprene rubber for further processing into sheets, in primary bulk form. HTS 4002.39.00.00 as 'other' IIR, compliant with primary forms note excluding worked shapes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Photos and dimensions of lumps to prove 'blocks of irregular shape' status
• Test for recovery/elongation properties if synthetic rubber status questioned
• Avoid bulk shipments mislabeled as plates if cut rectangular