4001.22.00 - Technically specified natural rubber (TSNR)

This HTS classification covers technically specified natural rubber (TSNR). TSNR is natural rubber that has undergone controlled processing to achieve specific physical and chemical properties, such as viscosity, purity, and plasticity. These specifications allow for more consistent performance in various manufacturing applications compared to un-specified natural rubber. The category encompasses TSNR in its primary forms or in plates, sheets, or strip.

Distinguishing this category from its siblings, 4001.21.00 covers natural rubber in the form of smoked sheets, which represents a less processed form of natural rubber. This current classification, 4001.22.00, is reserved for natural rubber that has been further refined and standardized according to technical specifications. The sibling category 4001.29.00.00 encompasses other forms of natural rubber not specifically covered elsewhere within the 4001.2 heading.

The subcategories within 4001.22.00 provide further detail based on the specific technical grades of TSNR. These subdivisions, such as Grade 5, Grade CV, Grade L, Grade 10, and Grade 20, denote different sets of precisely defined material characteristics. The "Other" subcategory is available for technically specified natural rubber that does not fall into the specifically enumerated grades. This granular classification allows for accurate tracking and tariff application based on the precise technical specifications of the natural rubber product.