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HSChapter 39
U.S. imports of fluoro-polymers (other), in primary forms (HS 390469) totaled $48.6M in April 2026, traded with 18 countries.
Last updated: April 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.
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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.
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Monthly import values over time