HS Code for Natural rubber blocks

Natural rubber blocks classified under HS code 4001.29 represent a specific stage of raw material processing within the rubber industry. Heading 4001 covers natural rubber in its various primary forms. To be classified under 4001.29, the rubber must be in a dry state and must not meet the specific technical requirements of other subheadings. Specifically, it excludes smoked sheets (4001.21) and technically specified natural rubber (TSNR, 4001.22). This category typically includes various types of crepe rubber, such as pale crepe or brown crepe, which are produced by passing the coagulated latex through heavy rollers to remove impurities and moisture. The classification depends on the physical form—blocks, plates, or sheets—and the absence of chemical vulcanization. Understanding this code is vital for logistics providers and tire manufacturers who source raw materials from plantations, as the tariff rates and regulatory requirements can vary significantly between different grades of natural rubber. The material must be in its raw, uncompounded state; once additives like carbon black or silica are introduced, the product shifts to heading 4005 for compounded rubber.

Products Included

• Pale crepe rubber blocks
• Brown crepe and estate crepe
• Air-dried sheets (ADS) not meeting smoked sheet standards
• Scrap rubber in block or plate form
• Natural rubber in primary forms not elsewhere specified

Common Misclassification

The most frequent misclassification occurs with HS code 4001.21 (Smoked sheets) and 4001.22 (Technically Specified Natural Rubber or TSNR). TSNR is defined by specific technical parameters like dirt content and plasticity, whereas 4001.29 is a residual category for non-TSNR blocks. Additionally, synthetic rubber blocks are classified under heading 4002. If the rubber has been vulcanized or mixed with fillers, it should be classified under 4005 (compounded rubber) or 4008 (plates and sheets of vulcanized rubber).

FAQ

What is the HS code for natural rubber blocks?

Natural rubber blocks that are not smoked sheets or technically specified (TSNR) are classified under HS code 4001.29.

What is the difference between 4001.22 and 4001.29?

HS code 4001.22 is for rubber that meets specific technical standards (TSNR), while 4001.29 is for other forms of natural rubber like crepe blocks that do not meet those specific technical criteria.