7019.13.15.40 - Of a kind used in industry as packing or lubricating materials (201)

This HTS classification covers specific types of glass fiber yarns that are not colored and do not fall into other specifically enumerated categories within the "Other yarn, slivers" group. These yarns are primarily intended for industrial applications, particularly as packing or lubricating materials. The "Of a kind used in industry as packing or lubricating materials" designation is crucial for accurate classification, signifying their functional purpose and form factor suitable for such uses.

Distinguishing this category from its sibling, 7019.13.15.80, relies on the explicit functional use as packing or lubricating materials. While both are uncolored yarns derived from glass fibers, this subcategory is specifically for those yarns where this industrial application is their defining characteristic. The sibling category, "Other," would encompass uncolored glass fiber yarns for industrial use that are not specifically designated for packing or lubrication purposes, or whose primary function is not yet clearly defined by the HTS.

As this is a leaf node in the HTS database, there are no further subcategories. Classification within this code is final based on the product meeting the criteria of being an uncolored glass fiber yarn and its intended use as packing or lubricating material within industrial settings. Examples might include specialized braided glass fiber yarns used for sealing or high-temperature insulation where lubrication properties are also a consideration.