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U.S. exports of fluoro-polymers (other), in primary forms (HS 390469) totaled $49.3M in July 2026.
Importers of Fluoro-Polymers (Other), in Primary Forms paid $6.2M in duties in July 2026 — an effective duty rate of 19% on $33.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Fluoro-Polymers (Other), in Primary Forms imports of $33.9M in July 2026 ran 14% below the year-to-date monthly average of $39.6M.
Last updated: July 2026 dataFluoropolymers not elsewhere specified — split under US tariff lines 3904691000 (elastomeric) and 3904695000 (non-elastomeric) — are specialty high-performance resins prized in chemical processing, semiconductor fabrication, and aerospace sealing applications for their exceptional thermal and chemical resistance. Japan leads US import supply, followed by Italy and China, reflecting the concentration of advanced fluoropolymer production capacity in those markets. Importers should note that certain Chinese-origin fluoropolymers may be subject to Section 301 tariffs, making origin documentation and classification between elastomeric and non-elastomeric grades a critical compliance step.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
347 shipments/mo
The distinction hinges on whether the polymer exhibits rubber-like elastic recovery at room temperature. Elastomeric fluoropolymers (e.g., certain FKM/Viton-type materials) rebound after deformation, while non-elastomeric grades (e.g., rigid PTFE-family resins) do not. Consult a licensed customs broker and review the supplier's technical data sheet to confirm the correct subheading before entry.
Yes — Chinese-origin fluoropolymers under heading 3904 have been subject to Section 301 tariffs. Because rates and product-specific exclusions change, importers should verify current applicability with a licensed customs broker prior to shipment.
HSChapter 39
Subheading 1 of 9 in heading 3904
Subheading 390469 · $33.9M of $114.8M
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ImportsExports
Imports
$33.9MYoY · Pro
Exports
$49.3MYoY · 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 |
|---|---|---|---|---|---|
| 3904695000 | Other Fluoro-Polymers,Except Elastomeric | $28.2M | 19.14% | 95.66% | $5.4M |
| 3904691000 | Other Fluoro-Polymers,Elastomeric | $26.3M | 11.17% | 100.00% | $2.9M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3904695000 | Other Fluoro-Polymers,Except Elastomeric | $33.1M |
| 3904691000 | Other Fluoro-Polymers,Elastomeric | $12.4M |
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
customs district
origin
entry
rate provision · imports
0.1% enters free of duty; the effective duty rate is 18.34%.