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Harmonized System
U.S. exports of synthetic filament tow of aramids (HS 550111) totaled $4.0M in July 2026.
Synthetic Filament Tow of Aramids imports of $7K in July 2026 ran 29% below the year-to-date monthly average of $10K.
Last updated: July 2026 dataAramid filament tow — the precursor form of high-performance fibers such as Kevlar and Nomex — is a critical input for ballistic protection, aerospace composites, and heat-resistant textiles. Classified under a single 10-digit line (5501110000), it enters the US primarily from Canada, Thailand, and Italy. Importers should note that aramid fibers are subject to Section 301 scrutiny when sourced from China, and end-use documentation is often required by downstream defense or aerospace customers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 shipments/mo
Filament tow (HTS heading 5501) consists of continuous, uncut multifilament bundles intended for conversion or cutting, while staple fibers (heading 5503) are already cut to discrete lengths. The distinction determines not only the HTS heading but also downstream processing requirements and applicable duty rates.
Shipments originating from China may be subject to Section 301 tariffs. Importers should verify the current Section 301 list status and any applicable exclusions with a licensed customs broker before entry, as coverage and exclusion availability change periodically.
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Subheading 5 of 6 in heading 5501
Subheading 550111 · $7K of $3.1M
ImportsExports
Imports
$7KYoY · Pro
Exports
$4.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5501110000 | Synthetic Filament Tow of Aramids | $7K | 5.37% | 30.67% | $374 |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5501110000 | Synthetic Filament Tow of Aramids | $4.0M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · July 2026
destination
Japan and United Arab Emirates together take 97% of it.
customs district
origin
entry
rate provision · imports
69.3% enters free of duty; the effective duty rate is 5.37%.