U.S. exports of Fluoro-Polymers (Other), in Primary Forms (HS 390469) totaled $49.4M in August 2026.
Importers of Fluoro-Polymers (Other), in Primary Forms paid $5.7M in duties in August 2026, an average duty rate of 17.93% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Fluoro-Polymers (Other), in Primary Forms imports of $33.3M in August 2026 ran 14% below the year-to-date monthly average of $38.8M.
Last updated: August 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.
369 import shipments a month
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.
ImportsExports
Imports
$33.3MYoY · free account
Exports
$49.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $431.2M of Fluoro-Polymers (Other), in Primary Forms and exported $531.2M.
Through August 2026. Source: U.S. Census Bureau.
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Subheading 2 of 9 in heading 3904
Subheading 390469 · $49.4M of $346.8M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3904695000 | Other Fluoro-Polymers, Except Elastomeric | $24.4M | 20.03% | 99.83% | $4.9M |
| 3904691000 | Other Fluoro-Polymers, Elastomeric | $7.6M | 11.20% | 89.70% | $853K |
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 | $37.5M |
| 3904691000 | Other Fluoro-Polymers, Elastomeric | $11.9M |
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 · August 2026
destination
customs district
origin
entry
rate provision · imports
2.5% enters free of duty; duty collected equals 17.93% of imports for consumption.