Viton Fluoroelastomer B-Type
Viton B-type fluoroelastomer is a copolymer of vinylidene fluoride, hexafluoropropylene, and cure-site monomers, with comonomer content exceeding 95% by weight. It is used in primary form for high-temperature O-rings and diaphragms. 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 product is declared as a raw polymer, not as a finished article
• Provide the polymer composition and any cure-site monomer details
• Verify that the product is not excluded by Chapter 39 notes, such as being a separate chemically defined compound
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.
Kalrez Perfluoroelastomer 6375
Kalrez 6375 is a perfluoroelastomer (FFKM) composed of tetrafluoroethylene, perfluoromethyl vinyl ether, and a cure-site monomer, with the polymer content exceeding 95% by weight. It is supplied in gum form for compounding into O-rings for chemical process industries. As an elastomeric fluoropolymer in primary forms, it falls under tariff item 3904.69.00.
Perfluoroalkoxy Resin (PFA)
PFA is a fluoropolymer resin composed of perfluoroalkyl vinyl ethers and tetrafluoroethylene, supplied in primary forms such as pellets. It is classified as an 'other' fluoropolymer under the subheading. As a fluoropolymer in primary forms not elsewhere specified, it falls under tariff item 3904.69.00.