3904.69.10.00 - Elastomeric

This HTS category, 3904.69.10.00, specifically covers **elastomeric fluoropolymers in their primary forms.** Elastomeric fluoropolymers are a class of synthetic polymers that exhibit rubber-like properties, meaning they can be stretched and then return to their original shape. These materials are distinguished by their high fluorine content, which imparts exceptional resistance to heat, chemicals, and weathering. Examples include various types of fluoroelastomers that, while not yet manufactured into finished articles, possess the inherent characteristics of rubber.

This classification distinguishes itself from its sibling category, 3904.69.50.00, which is also designated for "Other" fluoropolymers. The key differentiator lies in the specific physical property of **elastomeric behavior**. While other "other" fluoropolymers might be thermoplastic or rigid, this particular subheading is reserved for those designed to function as elastomers due to their molecular structure and cross-linking potential, even in their uncompounded, primary form.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, the focus for classification under 3904.69.10.00 is on identifying materials that are indeed fluoropolymers and possess the distinct elastomeric properties characteristic of rubber, and are presented in a primary form such as powders, granules, or lumps.