7019.72.90 - Other

This HTS category, 7019.72.90, encompasses "Other" articles within the broader classification of chemically bonded fabrics derived from glass fibers. Specifically, it covers closed fabrics of glass wool or glass fibers that do not fall under the more narrowly defined sibling category. The distinction from sibling 7019.72.70 lies in the exclusion of fiberglass tire cord fabric specifically treated and manufactured for adhesion to polymeric compounds in tires. This node captures other forms of chemically bonded glass fiber fabrics that are closed in construction.

The subcategories under 7019.72.90 provide further specificity for classifying these remaining "Other" chemically bonded fabrics. The subcategory 7019.72.90.30 is designated for silica filament fabric where the silica content exceeds 93 percent. This distinction is critical for differentiating high-silica content materials from those with a lower proportion of silica. The remaining subcategory, 7019.72.90.60, is also titled "Other," serving as a residual category for all chemically bonded, closed glass fiber fabrics that do not meet the criteria of the silica filament fabric subcategory.