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.
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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.
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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
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