Graphite-Impregnated Glass Fiber Lubricating Yarn
Uncolored glass fiber yarn lightly impregnated with graphite for superior lubricity in industrial bearing and stuffing box applications. The minimal treatment maintains glass fiber classification while enhancing packing and lubrication performance. Meets HTS 7019.13.15.40 criteria for industrial lubricating materials.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If colored rather than natural/uncolored
Identical yarn with colored treatment classifies under the colored yarn provisions rather than uncolored.
If graphite content exceeds 30% by weight
High graphite content shifts classification from glass fiber yarn to carbon/graphite-based articles.
If when sold in mat or felt form
Glass fibers converted into non-woven mats or felts for packing classify under glass fiber articles rather than yarn.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document graphite content percentage to ensure it remains below levels that would change material composition classification
• Provide lubrication performance test data linking yarn properties to industrial stuffing box applications
• Distinguish from carbon fiber products by providing chemical analysis confirming glass fiber base composition
Related Products under HTS 7019.13.15.40
E-Glass Yarn for Industrial Packing Seals
Uncolored E-glass yarn designed specifically for use as packing material in industrial seals and gaskets. This continuous filament yarn provides high temperature resistance and lubrication properties essential for mechanical packing applications. It falls under HTS 7019.13.15.40 due to its explicit use in industry as packing or lubricating materials.
High-Temperature Glass Fiber Packing Rope
Twisted uncolored glass fiber yarn formed into rope specifically for high-temperature industrial valve packing and lubrication. Provides excellent thermal insulation and self-lubricating properties in mechanical seals. Classified under HTS 7019.13.15.40 for its dedicated industrial packing and lubricating function.
Valve Stem Packing Glass Fiber Yarn
Specialty uncolored glass fiber yarn engineered for compressed valve stem packing in petrochemical processing equipment. Offers chemical resistance and dimensional stability under high pressure. Specifically qualifies under HTS 7019.13.15.40 for industrial packing applications.
Industrial Pump Shaft Glass Fiber Packing
Continuous filament uncolored glass yarn for packing industrial pump shafts and rotating equipment. Provides reliable sealing and lubrication in abrasive slurry environments. HTS 7019.13.15.40 classification reflects its dedicated industrial packing role.