Tecnoflon FOR P 4590
Tecnoflon FOR P 4590 is a peroxide-curable fluoroelastomer based on a vinylidene fluoride/perfluoromethyl vinyl ether copolymer, with comonomers exceeding 95% by weight. It is supplied in primary form pellets for injection molding gaskets in automotive fuel systems. This fluoropolymer in primary forms falls under tariff item 3904.69.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the polymer is predominantly PTFE
PTFE homopolymers are specifically classified under 3904.61.00.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the pellets are declared as primary forms, not as articles
• Provide the copolymer ratio and any additives in the product specification
• Confirm that the product is not a lubricating preparation or other excluded product under Chapter 39 notes
Related Products under Tariff item 3904.69.00
Chlorinated Fluoropolymer Concentrate Pellets
These pellets are a chlorinated olefin fluoropolymer concentrate for extrusion applications, with a polymer content compliant with the 95% rule for fluoropolymers. They are supplied in primary forms and are not otherwise specified in the subheading. As a fluoropolymer in primary forms, they fall under tariff item 3904.69.00.
Dyneon FC 2210Z Fluoroelastomer
Dyneon FC 2210Z is a bisphenol-curable fluoroelastomer supplied as primary pellets, with a vinylidene fluoride/hexafluoropropylene copolymer content exceeding 95% by weight. It is designed for low-temperature flexible seals in aerospace applications. As a fluoropolymer in primary forms not elsewhere specified, it falls under tariff item 3904.69.00.
Ethylene Chlorotrifluoroethylene Copolymer (ECTFE)
ECTFE is a copolymer fluoropolymer primarily composed of chlorotrifluoroethylene and ethylene, with comonomer units meeting the 95% content requirement. It is supplied in primary forms such as pellets or powder for various applications. As a fluoropolymer in primary forms not elsewhere specified, it is classified under tariff item 3904.69.00.
Fluorel Elastomer FC-2182
Fluorel FC-2182 is a perfluoroelastomer gum stock with perfluoromethyl vinyl ether and tetrafluoroethylene as the primary monomer units, exceeding 95% by weight. It is supplied in raw gum form for compounding into seals requiring extreme chemical resistance. This elastomeric fluoropolymer in primary forms is classified under tariff item 3904.69.00.
Fluorinated Ethylene Propylene Special Copolymer
Fluorinated Ethylene Propylene (FEP) special copolymer pellets are a type of fluoropolymer in primary forms, produced by copolymerizing tetrafluoroethylene and hexafluoropropylene. They are classified under tariff item 3904.69.00 as 'Other' fluoropolymers because the copolymer does not meet the 95% monomer content threshold for named subheadings, and no single comonomer unit predominates sufficiently to merit a more specific classification. These pellets are used in applications requiring high chemical resistance and thermal stability, such as wire insulation and chemical processing equipment.
Fluorosulfonated Polymer Powder (for Membranes)
Fluorosulfonated polymer powder is a fluoropolymer in primary form, chemically modified with sulfonyl groups for use in ion-exchange membranes. It falls under tariff item 3904.69.00 as 'Other' fluoropolymers because the chemical modification places it in the 'Other' subheading per subheading note 1(a)(3), as it is not more specifically covered elsewhere. The powder form is a primary form as defined in chapter note 6, suitable for further processing into membranes.