U.S. imports of Polytetrafluoroethylene (PTFE) in Primary Forms (HS 390461) totaled $13.9M in September 2026, imported from 32 countries.
Importers of Polytetrafluoroethylene (PTFE) in Primary Forms paid $2.3M in duties in September 2026, an average duty rate of 16.33% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Polytetrafluoroethylene (PTFE) in Primary Forms imports of $13.9M in September 2026 ran 33% above the year-to-date monthly average of $10.4M.
Last updated: September 2026 dataPTFE — commercially known under trade names such as Teflon — is a fluoropolymer with exceptional chemical inertness, a broad service temperature range, and the lowest coefficient of friction of any solid polymer, properties that drive demand in semiconductor processing equipment, chemical plant linings, aerospace seals, and medical devices. The US schedule subdivides the heading into granular PTFE (3904610010) and non-granular forms such as fine powder and aqueous dispersions (3904610090), with a legacy undivided line (3904610000) also present. India leads US import supply, followed by Japan and China — a supplier mix that reflects both cost-competitive Indian production and the technical specialization of Japanese fluoropolymer producers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
249 import shipments a month
Granular PTFE is a free-flowing powder produced by suspension polymerization, typically used for compression molding and ram extrusion of large billets. Non-granular forms include fine powder (produced by dispersion polymerization for paste extrusion of thin-wall tubing and wire insulation) and aqueous dispersions used for coating applications. The physical form and production method determine which 10-digit line applies, and suppliers should confirm the grade type on commercial invoices.
PTFE classified under heading 3904.61 has been subject to Section 301 tariffs when originating from China. Given that China is among the top suppliers under this heading, importers should verify the current tariff status and any available exclusions with a licensed customs broker before entry, as Section 301 lists and exclusion periods are subject to ongoing administrative review.
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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 |
|---|---|---|---|---|---|
| 3904610090 | Polytetrafluoroethylene (PTFE), Except Granular | $9.6M | 14.02% | 98.83% | $1.3M |
| 3904610010 | Polytetrafluoroethylene (PTFE), Granular | $4.0M | 15.16% | 96.30% | $607K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3904610000 | Polytetrafluoroethylene (PTFE) | $10.9M |
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.
Subheading 3 of 9 in heading 3904
Subheading 390461 · $13.9M of $92.0M
Imports · September 2026
origin
India and Italy together supply 63% of it. China pays 42.0% duty; Italy 9.9%.
customs district
destination
entry
rate provision · imports
3.9% enters free of duty; duty collected equals 16.33% of imports for consumption.
ImportsExports
Imports
$13.9MYoY · free account
Exports
$12.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $129.0M of Polytetrafluoroethylene (PTFE) in Primary Forms and exported $124.4M.
Through September 2026. Source: U.S. Census Bureau.