U.S. imports of Synthetic Filament Tow, Not Elsewhere Specified (SITC 26669) totaled $1.2M in August 2026, imported from 13 countries.
Importers of Synthetic Filament Tow, Not Elsewhere Specified paid $137K in duties in August 2026, an average duty rate of 11.06% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataFilament tow produced from polymers other than nylon, polyester, acrylic, or modacrylic — including polypropylene, polyethylene, and other specialty synthetics — falls into this residual category. These specialty tows serve niche converting applications in filtration, geotextiles, and industrial nonwovens where the specific polymer's chemical resistance, melting point, or mechanical properties are the selection driver. Because the polymer type is the primary classification determinant, importers should ensure that supplier documentation clearly identifies the fiber-forming polymer by chemical name.
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21 import shipments a month
A manufacturer's certificate of composition identifying the polymer by chemical name and confirming the product is in tow form (continuous, uncut, crimped filament bundle) is essential. If the polymer is a blend, the percentage of each component should be stated, as the dominant polymer by weight typically governs classification.
Polypropylene tow is used in geotextile and rope-making applications due to its chemical resistance and low density. Specialty high-performance polymer tows — such as those based on polyethylene or fluoropolymers — serve filtration and protective textile markets where thermal or chemical resistance requirements rule out commodity synthetics.
Basic heading 123 of 239 in section 2
Basic heading 26669 · $1.2M of $3.8B
Imports · August 2026
origin
Hungary and China together supply 96% of it. China pays 45.0% duty; Hungary 10.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
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12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $13.5M of Synthetic Filament Tow, Not Elsewhere Specified and exported $11.4M.
Through August 2026. Source: U.S. Census Bureau.