U.S. exports of Isobutene-Isoprene (Butyl) Rubber (Iir) (HS 4002310000) totaled $4.1M in August 2026.
Importers of Isobutene-Isoprene (Butyl) Rubber (Iir) paid $24K in duties in August 2026, an average duty rate of 2.47% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Isobutene-Isoprene (Butyl) Rubber (Iir) imports of $954K in August 2026 ran 26% below the year-to-date monthly average of $1.3M.
Last updated: August 2026 dataAverage import price $3.19/kg · 36 import shipments a month
Trade Directory
List your company and tag the 6-digit products you trade, so the companies trading them can find you. Be the first supplier listed.
Statistical number 1 of 1 in subheading 400231
Statistical number 4002310000 · $4.1M of $3.9M
Exports · August 2026
destination
Belgium and Mexico together take 66% of it.
customs district
None recorded for this period.
origin
Census publishes state breakdowns to the 6-digit level only. See HS 400231 for those.
entry
Census publishes port breakdowns to the 6-digit level only. See HS 400231 for those.
rate provision · imports
None recorded for this period.
ImportsExports
Imports
$954KYoY · free account
Exports
$4.1MYoY · free account
Low of 8 reported months · imports
Low · free accountThrough August 2026 · imports 8 of 12 months reported, exports 8 of 12 months reported. Source: U.S. Census Bureau.