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HSChapter 55
U.S. imports of synthetic filament tow of aramids (HS 550111) totaled $7K in April 2026, traded with 4 countries.
Synthetic Filament Tow of Aramids imports of $7K in April 2026 ran 43% below the year-to-date monthly average of $13K.
Last updated: April 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.
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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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 5501110000 | SYNTHETIC FILAMENT TOW OF ARAMIDS | $7K | 17.51% | $906 |
SYNTHETIC FILAMENT TOW OF ARAMIDS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5501110000 | SYNTHETIC FILAMENT TOW OF ARAMIDS | $2.8M |
SYNTHETIC FILAMENT TOW OF ARAMIDS
201.4K kg
SYN STP FIB NT CRD, CMB OR PRSD SPNG, OF POLYESTER
HS 550320
ARTIF STP FIB NT CRD, CMB OR PRSD SPNG, VIS RAYON
HS 550410
YRN N SW TH MM ST FIB RT SL SYN STP FIB >=85% S FB
HS 551110
STPL FIB ARAMIDS NOT CARD/COMBD/PRCSD FOR SPINNING
HS 550311
SYN STP FIB NT CRD, CMB OR PRSD SPNG, ACRY/MODACRY
HS 550330
SYN STP FIB NOT CARD, CMB OR PRSD SPNG, NESOI
HS 550390
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CINCINNATI-LAWRENCEBURG, OH | -- | $2.7M | +$2.7M |
| DENVER, CO | -- | $22K | +$22K |
| ATLANTA, GA | -- | $15K | +$15K |