PTFE Pre-Sintered Powder from Mexico
Partially sintered polytetrafluoroethylene powder for improved green strength in molding. Remains HTS 3904.61.00 as thermal processing doesn't constitute chemical modification.
Duty Rate — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document thermal history to distinguish from fully sintered articles
• Measure crystallinity to confirm primary polymer status