Product classification
HS code for Compounded unvulcanized rubber: 4005.10
Rubber, unvulcanised, compounded with carbon black or silica, in primary forms or in plates, sheets or strip.
Classification of compounded unvulcanized rubber under HS 4005.10
HS code 400510 is designated for unvulcanized rubber that has been compounded with specific reinforcing agents, namely carbon black or silica. This classification falls under Chapter 40, which covers rubber and articles thereof. Heading 4005 specifically addresses compounded rubber, unvulcanized, in primary forms or in plates, sheets, or strip. The inclusion of carbon black or silica is a significant industrial distinction, as these additives are used to enhance the physical properties of the rubber, such as tensile strength and abrasion resistance, before the vulcanization process occurs. To be classified here, the rubber must be in a "primary form" (such as blocks, lumps, or powders) or in basic geometric shapes like sheets. This code excludes natural rubber that has not been compounded and synthetic rubber in its raw state. The precise chemical composition and the presence of the specified fillers are the primary drivers for classification under this subheading. This material is typically an intermediate product used in the manufacture of tires, seals, and other industrial rubber goods.
- Covers
- Masterbatches of rubber with carbon black
- Unvulcanized rubber sheets containing silica
- Compounded rubber in granules or powder
- Unvulcanized rubber plates for industrial molding
- Compounded latex in primary forms
- Also under 4005.10
- Continental AG tire compounds
- Goodyear pre-mixed rubber
- Bridgestone raw tire materials
- Sumitomo Rubber Industries compounds
Codes often confused with 4005.10
Common mistake. This code is often confused with HS code 4001 (natural rubber) or 4002 (synthetic rubber). Those codes are for raw rubber that has not yet been compounded with fillers. Another common error is using HS code 400591, which is for compounded unvulcanized rubber that does not contain carbon black or silica. If the rubber has been vulcanized, it must be classified under headings 4007 through 4017.
Top exporters and importers of HS 400510 (the code used for compounded unvulcanized rubber), 2025
In 2025, the largest exporter of HS 400510 (the code used for compounded unvulcanized rubber) in UN Comtrade data was Germany, with 14% of world exports; the largest importer in UN Comtrade data was India, with 13% 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 400510, not only compounded unvulcanized rubber.
Top exporters 2025 · share of world exports
- 1 Germany $658M 14% of world exports
- 2 United States $507M 11% of world exports
- 3 Thailand $419M 9.0% of world exports
World total: $4.6B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $597M 13% of world imports
- 2 United States $493M 11% of world imports
- 3 Mexico $318M 7.2% of world imports
World total: $4.4B 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 codes for compounded unvulcanized rubber
Brazil splits HS 4005.10 into 2 NCM codes. Pick the one that matches your product:
- 4005.10.10EPDM-propylene compound with silica, granules
- 4005.10.90Other rubber compounded with carbon black/silica
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product category is subject to the EU Deforestation Regulation (EUDR). Importers must provide due diligence statements proving the product was not produced on deforested land after December 31, 2020.
Questions about compounded unvulcanized rubber
What is the HS code for Compounded unvulcanized rubber?
The HS code for Compounded unvulcanized rubber is 400510 (Rubber; unvulcanised, compounded with carbon black or silica, in primary forms or in plates, sheets or strip). The HS code for unvulcanized rubber compounded with carbon black or silica is 400510.
How do I classify Compounded unvulcanized rubber for customs?
Compounded unvulcanized rubber is classified under HS code 400510 — Rubber; unvulcanised, compounded with carbon black or silica, in primary forms or in plates, sheets or strip. This is a 6-digit subheading level code.
What if the rubber is already vulcanized?
If the rubber has undergone vulcanization, it is no longer classified under 4005 and must be moved to headings such as 4008 (plates/sheets) or 4016 (other articles).
Which countries are the top exporters of compounded unvulcanized rubber (HS 400510)?
In 2025, the top exporters of HS 400510 (the code used for compounded unvulcanized rubber) in UN Comtrade data were Germany ($658M, 14% of world exports), the United States ($507M) and Thailand ($419M). World exports came to about $4.6B, 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 compounded unvulcanized rubber (HS 400510)?
In 2025, the top importers of HS 400510 (the code used for compounded unvulcanized rubber) in UN Comtrade data were India ($597M, 13% of world imports), the United States ($493M) and Mexico ($318M). World imports came to about $4.4B, 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 Compounded unvulcanized rubber the same in all countries?
The base HS code 400510 for Compounded unvulcanized 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 compounded unvulcanized rubber in Brazil?
Brazil splits HS 400510 into 2 NCM codes, so the right one for compounded unvulcanized rubber depends on the product's details: 4005.10.10 (EPDM-propylene compound with silica, granules), 4005.10.90 (Other rubber compounded with carbon black/silica).