Ceramic-Filled Granular PTFE for Valves from United States
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.
Duty Rate — United States → Canada
0%
Import Tips
• 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