7019.13.24.00 - Fiberglass rubber reinforcing yarn, made from electrically nonconductive continuous fiberglass filaments 9 microns in diameter to 11 microns in diameter and impregnated with resorcinol formaldehyde latex treatment for adhesion to polymeric compounds

This HTS category, 7019.13.24.00, specifically covers fiberglass rubber reinforcing yarn that is colored. The defining characteristics of these yarns are their construction from continuous fiberglass filaments ranging from 9 to 11 microns in diameter, and their impregnation with a resorcinol formaldehyde latex treatment. This treatment is crucial for ensuring adhesion to polymeric compounds, making them suitable for reinforcement applications. The "colored" designation indicates that the yarn has undergone a dyeing or pigmentation process, distinguishing it from uncolored fiberglass yarns.

At this level, the primary sibling category, 7019.13.28.00, encompasses "Other" colored yarns. This implies that 7019.13.24.00 is for a specific type of colored fiberglass reinforcing yarn with distinct technical specifications (filament diameter and treatment), while 7019.13.28.00 would cover any other colored fiberglass yarns not meeting these precise criteria. The classification hinges on the specific material composition, filament dimensions, and the particular latex treatment applied for adhesion purposes, alongside the presence of color.

As this is a leaf node in the HTS structure, there are no further subcategories. Therefore, the focus for classification under 7019.13.24.00 is on accurately identifying whether the imported product precisely matches the detailed description of fiberglass rubber reinforcing yarn, colored, with the specified filament diameters and latex treatment. This ensures accurate tariff application and avoids misclassification with other types of fiberglass yarns or reinforcement materials.