Product classification
HS code for Cellular rubber blocks: 4008.19
Rubber, vulcanised (other than hard rubber), cellular rubber, (other than in plates, sheets or strip).
Classification of cellular rubber blocks under HS 4008.19
Cellular rubber blocks are classified under HS code 4008.19. This classification is determined by the material's physical state and its chemical composition according to the General Rules for the Interpretation of the Harmonized System. Heading 4008 covers plates, sheets, strip, rods, and profile shapes of vulcanized rubber other than hard rubber. The term "cellular" refers to rubber that has been expanded during the vulcanization process to create a structure containing many small cells, which can be open, closed, or a mix of both. While subheading 4008.11 is dedicated specifically to plates, sheets, and strip, subheading 4008.19 serves as the residual category for cellular rubber in other bulk forms. This includes blocks that are too thick to be considered sheets or those that have been cut into shapes other than simple rectangles. The rubber must be vulcanized; if it were unvulcanized, it would likely fall under heading 4005. Furthermore, if the block is made of hard rubber (ebonite), it would be classified under heading 4017.
- Covers
- Vulcanized cellular rubber blocks
- Sponge rubber cubes for industrial padding
- Thick slabs of expanded rubber not meeting sheet dimensions
- Cellular rubber profile shapes in block form
- Foamed vulcanized rubber for shock absorption
- Also under 4008.19
- Rogers Poron moulded parts
- Saint-Gobain Norseal profiles
- Armacell ArmaFlex insulation tubes
- Rubber-Cal sponge rubber cords
- custom automotive foam seals.
Codes often confused with 4008.19
Common mistake. Cellular rubber blocks are frequently confused with HS code 4008.11, which is strictly for plates, sheets, and strip. The distinction lies in the dimensions and the form; blocks that do not meet the definition of a sheet (usually due to excessive thickness or non-flat geometry) must move to 4008.19. Another common error is using 4016.99, which covers other articles of vulcanized rubber. However, 4016 is for finished products, whereas 4008 is for rubber in primary or bulk forms like blocks. Additionally, if the material is plastic foam rather than rubber, it should be classified under heading 3921.
Top exporters and importers of HS 400819 (the code used for cellular rubber blocks), 2025
In 2025, the largest exporter of HS 400819 (the code used for cellular rubber blocks) in UN Comtrade data was the United States, with 15% of world exports; the largest importer in UN Comtrade data was Canada, with 9.5% 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 400819, not only cellular rubber blocks.
Top exporters 2025 · share of world exports
- 1 United States $34M 15% of world exports
- 2 Germany $32M 14% of world exports
- 3 France $13M 5.8% of world exports
World total: $222M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Canada $24M 9.5% of world imports
- 2 United States $20M 7.9% of world imports
- 3 Germany $19M 7.6% of world imports
World total: $248M 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 cellular rubber blocks
Brazil classifies cellular rubber blocks under NCM 4008.19.00: HS 4008.19 with 00 added.
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 cellular rubber blocks
What is the HS code for Cellular rubber blocks?
The HS code for Cellular rubber blocks is 400819 (Rubber; vulcanised (other than hard rubber), cellular rubber, (other than in plates, sheets or strip)). The HS code for cellular rubber blocks is 4008.19, which covers vulcanized cellular rubber in forms other than plates, sheets, or strip.
How do I classify Cellular rubber blocks for customs?
Cellular rubber blocks is classified under HS code 400819 — Rubber; vulcanised (other than hard rubber), cellular rubber, (other than in plates, sheets or strip). This is a 6-digit subheading level code.
How does 4008.19 differ from 4008.11?
HS code 4008.11 is specifically for cellular rubber in the form of plates, sheets, and strip, while 4008.19 is the residual code for other forms like blocks and rods.
Which countries are the top exporters of cellular rubber blocks (HS 400819)?
In 2025, the top exporters of HS 400819 (the code used for cellular rubber blocks) in UN Comtrade data were the United States ($34M, 15% of world exports), Germany ($32M) and France ($13M). World exports came to about $222M, 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 cellular rubber blocks (HS 400819)?
In 2025, the top importers of HS 400819 (the code used for cellular rubber blocks) in UN Comtrade data were Canada ($24M, 9.5% of world imports), the United States ($20M) and Germany ($19M). World imports came to about $248M, 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 Cellular rubber blocks the same in all countries?
The base HS code 400819 for Cellular rubber blocks 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 cellular rubber blocks in Brazil?
In Brazil, cellular rubber blocks (HS 400819) is classified under NCM 4008.19.00.