4006.90.10.00 - Of natural rubber

HTS Code 4006.90.10.00 specifically classifies articles manufactured from natural rubber that fall under the broader heading of "Other forms (for example, rods, tubes and profile shapes) and articles (for example, discs and rings), of unvulcanized rubber." This category is designed to capture unvulcanized rubber articles that are not specifically enumerated elsewhere within the 4006 heading and are not composite products. Examples include simple shapes like unvulcanized rubber discs, rings, or strips intended for further processing or as components in various manufactured goods where the rubber's plasticity is a key characteristic.

Distinguishing this category from its sibling, 4006.90.50.00, which also falls under "Other," is primarily based on the material composition. While both cover "other" forms and articles of unvulcanized rubber, 4006.90.10.00 is strictly limited to articles made *of natural rubber*. The sibling category, 4006.90.50.00, would therefore encompass similar unvulcanized rubber articles but made from synthetic rubber or a blend where natural rubber is not the predominant component.

As this is a leaf node, there are no further subcategories under HTS Code 4006.90.10.00. Classification under this code hinges on the clear identification of the article as being made from unvulcanized natural rubber and not fitting into any more specific provision within Chapter 40 or other relevant sections of the HTSUS. The absence of vulcanization is a critical defining characteristic.