Fluoroelastomer Backup Washer from Mexico
Viton fluoroelastomer washer backing primary seals in oilfield pumps, from heading 3904 copolymers. HTS 3926.90.45.90 for other seals. Resists extreme chemicals and temperatures.
Duty Rate — Mexico → United States
13.5%
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
• Prove 95% fluoro comonomer content via lab reports per note (a)(2)
• Declare as individual washer, not set, to stay in 3926
• Avoid industrial end-use ambiguity leading to Chapter 84