Section VII — Plastics and articles thereof; rubber and articles thereof
Chapter 40 — Rubber and articles thereof
Heading 4002 — Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 40.01 with any product of this heading, in primary forms or in plates, sheets or strip.
National subdivision 4002.3 — Isobuteneisoprene (butyl) rubber (IIR);haloisobuteneisoprene rubber (CIIR or BIIR):
Subheading 4002.31 — Isobuteneisoprene (butyl) rubber (IIR)
HS code
4002.31.00 Isobutene-isoprene (butyl) rubber
Last Verified Date - 1 October 2026
Common commodities
Butyl rubber blocksUnvulcanized butyl sheetsIsobutene-isoprene platesButyl rubber stripsPrimary form IIR sheetsButyl rubber balesIsobutene-isoprene plates (40023100)Unvulcanized IIR blocksButyl rubber primary formsIsobutene-isoprene strip (40023100)