7019.61.40 - Other

This HTS category, 7019.61.40, encompasses "Other" mechanically bonded fabrics of glass fibers, specifically those that are closed woven fabrics of rovings and are not colored. This classification acts as a residual category for such fabrics that do not fit into more specific subheadings within the mechanically bonded fabrics of glass fibers group. The key defining characteristics are the material (glass fiber rovings), construction (closed woven fabric), and lack of added color.

Distinguishing this category from its sibling, 7019.61.30.00, is crucial. The sibling specifically details fiberglass tire cord fabric, characterized by filament diameter and a particular impregnation treatment designed for adhesion to polymeric compounds. HTS 7019.61.40, conversely, covers a broader range of non-colored, closed woven glass fiber fabrics made from rovings that do not meet the precise specifications of tire cord fabric.

The subcategories under 7019.61.40 provide further refinement. 7019.61.40.30 is designated for silica filament fabric, requiring a silica content exceeding 93 percent, indicating a specialized, high-silica glass composition. The residual subheading, 7019.61.40.60, captures all other non-colored, closed woven fabrics of glass fiber rovings that do not qualify for the more specific silica filament fabric classification. This bifurcated structure allows for precise classification based on material composition and specialized applications.