Product classification
HS code for Silica rubber compound: 4005.10
Rubber, unvulcanised, compounded with carbon black or silica, in primary forms or in plates, sheets or strip.
Classification of silica rubber compound under HS 4005.10
Silica rubber compound is classified under HS code 4005.10. This code falls under Chapter 40, which covers rubber and articles thereof. Heading 4005 is dedicated to compounded rubber that is unvulcanised, in primary forms or in plates, sheets, or strips. Subheading 4005.10 specifically covers rubber compounded with carbon black or silica. In modern tire manufacturing and industrial rubber production, silica is frequently used as a reinforcing filler to improve rolling resistance and grip. For a product to fall under this code, the silica must be mixed into the raw rubber (natural or synthetic) before vulcanization. This classification is essential for manufacturers who trade intermediate rubber materials that are ready for molding or further processing into finished goods.
- Covers
- Unvulcanised rubber masterbatches containing silica
- Silica-filled synthetic rubber sheets
- Compounded unvulcanised natural rubber with silica filler
- Silica-reinforced rubber strips for tire treads
- Unvulcanised rubber plates containing silicon dioxide
- 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. A common error is classifying this material under HS code 4002, which covers synthetic rubber in primary forms. However, once silica or carbon black is added, the material is considered "compounded" and must move to 4005. Another misclassification occurs with HS code 4008, which covers plates and sheets of vulcanized rubber. If the rubber has already undergone the vulcanization process (heat-treated with sulfur), it can no longer be classified under 4005. Additionally, pure silica powder should be classified under 2811.22, not under the rubber chapter, even if intended for use in the rubber industry.
Top exporters and importers of HS 400510 (the code used for silica rubber compound), 2025
In 2025, the largest exporter of HS 400510 (the code used for silica rubber compound) 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 silica rubber compound.
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 silica rubber compound
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 silica rubber compound
What is the HS code for Silica rubber compound?
The HS code for Silica rubber compound is 400510 (Rubber; unvulcanised, compounded with carbon black or silica, in primary forms or in plates, sheets or strip). The HS code for unvulcanised rubber compounded with silica is 4005.10.
How do I classify Silica rubber compound for customs?
Silica rubber compound 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.
Does 4005.10 include finished rubber tires?
No, finished tires are classified under heading 4011. HS code 4005.10 is only for the raw, unvulcanised compound material.
Which countries are the top exporters of silica rubber compound (HS 400510)?
In 2025, the top exporters of HS 400510 (the code used for silica rubber compound) 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 silica rubber compound (HS 400510)?
In 2025, the top importers of HS 400510 (the code used for silica rubber compound) 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 Silica rubber compound the same in all countries?
The base HS code 400510 for Silica rubber compound 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 silica rubber compound in Brazil?
Brazil splits HS 400510 into 2 NCM codes, so the right one for silica rubber compound 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).