Product classification
HS code for Acrylonitrile-butadiene rubber: 4002.59
Rubber, synthetic, acrylonitrile-butadiene rubber (NBR), (other than latex), in primary forms or in plates, sheets or strip.
Classification of acrylonitrile-butadiene rubber under HS 4002.59
Acrylonitrile-butadiene rubber (NBR), in forms other than latex, is classified under HS code 4002.59. Chapter 40 of the Harmonized System covers rubber and articles thereof. Heading 4002 is dedicated to synthetic rubber and factice derived from oils, in primary forms or in plates, sheets, or strip. Within this heading, the 4002.5x series is specific to acrylonitrile-butadiene rubber (NBR). Subheading 4002.59 is the 'other' category for NBR that is not in the form of latex. This includes NBR in blocks, crumbs, or non-vulcanized sheets. The classification depends on the product being in a 'primary form' as defined by Note 3 to Chapter 40, which includes liquids and pastes, blocks of irregular shape, lumps, powders, granules, and similar bulk forms. This code is used for the raw synthetic rubber material before it has been compounded with fillers or vulcanized into finished products.
- Covers
- NBR synthetic rubber in blocks or bales
- Acrylonitrile-butadiene rubber crumbs
- Unvulcanized NBR sheets and strips
- NBR powder for industrial processing
- Non-latex NBR primary forms
- Also under 4002.59
- Zeon NBR
- Lanxess NBR
- Kumho NBR
- Automotive fuel hoses
- Hydraulic seals
- Industrial O-rings
- Gaskets
Codes often confused with 4002.59
Common mistake. NBR is often misclassified under 4002.51, which is strictly for the latex (liquid dispersion) form of the rubber. Another common error is using 4005.10, which is for compounded rubber (rubber mixed with carbon black or silica). If the NBR has been vulcanized and cut into specific shapes, it may fall under 4008.21 (plates/sheets) or 4016.93 (gaskets/seals), depending on the degree of processing and the final application.
Top exporters and importers of HS 400259 (the code used for acrylonitrile-butadiene rubber), 2025
In 2025, the largest exporter of HS 400259 (the code used for acrylonitrile-butadiene rubber) in UN Comtrade data was South Korea, with 24% of world exports; the largest importer in UN Comtrade data was China, with 18% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 400259, not only acrylonitrile-butadiene rubber.
Top exporters 2025 · share of world exports
- 1 South Korea $259M 24% of world exports
- 2 France $186M 17% of world exports
- 3 United States $164M 15% of world exports
World total: $1.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $201M 18% of world imports
- 2 United States $127M 11% of world imports
- 3 India $120M 11% of world imports
World total: $1.1B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for acrylonitrile-butadiene rubber
Brazil classifies acrylonitrile-butadiene rubber under NCM 4002.59.00: HS 4002.59 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about acrylonitrile-butadiene rubber
What is the HS code for Acrylonitrile-butadiene rubber?
The HS code for Acrylonitrile-butadiene rubber is 400259 (Rubber; synthetic, acrylonitrile-butadiene rubber (NBR), (other than latex), in primary forms or in plates, sheets or strip).
How do I classify Acrylonitrile-butadiene rubber for customs?
Acrylonitrile-butadiene rubber is classified under HS code 400259 — Rubber; synthetic, acrylonitrile-butadiene rubber (NBR), (other than latex), in primary forms or in plates, sheets or strip. This is a 6-digit subheading level code.
What is the HS code for NBR rubber?
The HS code for NBR in primary forms (excluding latex) is 4002.59.
What qualifies as a 'primary form' for NBR?
Primary forms include raw blocks, lumps, powders, or granules that have not yet been mixed with vulcanizing agents or fillers like carbon black.
Which countries are the top exporters of acrylonitrile-butadiene rubber (HS 400259)?
In 2025, the top exporters of HS 400259 (the code used for acrylonitrile-butadiene rubber) in UN Comtrade data were South Korea ($259M, 24% of world exports), France ($186M) and the United States ($164M). World exports came to about $1.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of acrylonitrile-butadiene rubber (HS 400259)?
In 2025, the top importers of HS 400259 (the code used for acrylonitrile-butadiene rubber) in UN Comtrade data were China ($201M, 18% of world imports), the United States ($127M) and India ($120M). World imports came to about $1.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Acrylonitrile-butadiene rubber the same in all countries?
The base HS code 400259 for Acrylonitrile-butadiene rubber is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for acrylonitrile-butadiene rubber in Brazil?
In Brazil, acrylonitrile-butadiene rubber (HS 400259) is classified under NCM 4002.59.00.