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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If measured by linear density rather than tex
Same yarn with different measurement convention (denier vs. tex) may fall under alternative yarn statistical reporting.
If imported pre-formed into packing rings
Glass yarn pre-twisted and cut into packing rings classifies as finished gasket rather than bulk yarn.
If lubricating additives exceed minimal treatment
Yarns with substantial chemical treatments for lubrication may classify under lubricated yarn provisions.
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Import Tips & Compliance
• Include OEM specifications from valve manufacturers confirming compatibility and packing application
• Maintain records of pressure/temperature ratings validating industrial packing performance claims
• Avoid general merchandise classification by providing industry-specific application documentation
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.
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.
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.