7019.64.90.30 - Silica filament fabric of filaments with silica content greater than 93 percent (622)

This HTS classification, 7019.64.90.30, specifically designates silica filament fabrics where the filaments possess a silica content exceeding 93 percent. These fabrics are characterized by their construction from fine glass filaments, meticulously woven in a plain weave pattern. The classification is further refined by the fact that these woven fabrics are either coated or laminated, and are presented in a colored form, distinguishing them from uncolored variants.

This subcategory is differentiated from its sibling, 7019.64.90.60, by the presence of coloration. While both are mechanically bonded, closed woven fabrics of yarns, coated or laminated, and made from glass fibers with high silica content, the key distinction lies in whether the fabric is colored or not. This colored aspect is a primary determinant for classification within this specific code.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification under 7019.64.90.30 is definitive based on the material composition (silica content > 93%), fabric construction (closed woven, plain weave), treatment (coated or laminated), and visual characteristic (colored). Examples of goods that would fall here include specialized high-temperature resistant fabrics or components used in aerospace or industrial applications where extreme heat resistance and inertness are paramount, and the fabric is supplied in a colored state.