Ceramic-Filled Granular PTFE for Valves
Ceramic-filled granular PTFE for valves, with 20% ceramic filler for abrasion resistance, keeps PTFE as the dominant polymer. This granular primary form is classified under 3904.61.00. The ceramic additive enhances hardness without changing the polymer's tariff identity.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If PTFE monomer content is below 95%
Other fluoro-polymers with different monomer compositions are classified separately.
If imported as valve seats or finished valve parts
Parts of valves fall under Chapter 84, not Chapter 39.
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
• Verify the ceramic filler does not exceed 5% by weight to maintain PTFE monomer purity
• Include filler composition in commercial invoices
• Be prepared to demonstrate the product is in primary form, not a finished article
Related Products under Tariff item 3904.61.00
Algoflon PTFE Molding Powder
Algoflon PTFE free-flow molding powder for isostatic pressing of complex shapes is classified under 3904.61.00. This primary form meets subheading purity rules with high bulk density. It is a standard industrial grade resin for precision molding.
Bronze-Filled Granular PTFE Compound
Bronze-filled granular PTFE compound, where PTFE remains the predominant polymer by weight, is a primary form of polytetrafluoroethylene. The bronze powder acts as a filler, enhancing load-bearing capacity for seals and thrust washers. It falls under tariff item 3904.61.00 as a fluoro-polymer in primary form.
Carbon-Filled Granular PTFE for Bearings
Carbon-filled granular PTFE for bearings, with carbon powder at 10-15% to improve wear resistance and conductivity, maintains over 95% PTFE monomer content. As a granular primary form, it is classified under 3904.61.00. The carbon filler does not alter the polymer's primary classification.
Extrusion-Grade PTFE Resin
Extrusion-grade polytetrafluoroethylene (PTFE) resin in granular form, optimized for ram extrusion into rods and profiles. It is a pure PTFE polymer in primary form, meeting the 95% monomer content rule for classification under this tariff item.
Fluon PTFE Molding Powder
Fluon brand PTFE molding powder for compression molding of bearings and seals is classified under 3904.61.00. This standard industrial grade resin meets the 95% purity rule. It is a primary form suitable for various molding processes.
Glass-Filled Granular PTFE Compound
Glass-filled granular PTFE compound with 15-25% glass fiber for enhanced mechanical strength, where PTFE remains the predominant polymer. This granular primary form is classified under 3904.61.00. The glass reinforcement improves dimensional stability for demanding applications.