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SITCSection 2
U.S. imports of acrylonitrile-butadiene rubber (nbr) in primary forms (SITC 23215) totaled $14.9M in July 2026, traded with 25 countries.
Importers of Acrylonitrile-Butadiene Rubber (NBR) in Primary Forms paid $1.2M in duties in July 2026 — an effective duty rate of 10% on $11.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Acrylonitrile-Butadiene Rubber (NBR) in Primary Forms imports of $14.9M in July 2026 ran 23% above the year-to-date monthly average of $12.2M.
Last updated: July 2026 dataNitrile rubber (NBR) is the elastomer of choice for oil-resistant seals, gaskets, and hoses across the automotive, aerospace, and oil-and-gas sectors, with its acrylonitrile (ACN) content — typically ranging from 18% to 50% — directly governing the balance between oil resistance and low-temperature flexibility. Higher ACN grades provide superior resistance to petroleum-based fluids but stiffen at lower temperatures, a trade-off that buyers must specify precisely in purchase contracts. Hydrogenated NBR (HNBR), a further-processed derivative, classifies differently and should not be conflated with standard NBR at the point of import.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
227 shipments/mo
Basic heading 48 of 239 in section 2
Basic heading 23215 · $14.9M of $3.8B
No — all ACN content grades of standard NBR classify under the same heading regardless of whether the ACN content is 18%, 33%, or 50%. The ACN percentage is a critical commercial specification that should appear on the certificate of analysis and purchase order, but it does not create a separate tariff line.
HNBR is produced by selectively hydrogenating the double bonds in NBR, yielding a chemically distinct polymer with superior heat and ozone resistance. It may classify under a different heading than standard NBR depending on the applicable tariff schedule, so importers should obtain a binding ruling or consult a licensed customs broker before assuming HNBR falls under the same line as conventional nitrile rubber.
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Imports · July 2026
origin
Japan and France together supply 57% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$14.9MYoY · Pro
Exports
$14.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.