Silicone Valve Stem Seal from Mexico
High-temperature silicone rubber seal for engine valve stems, polymer from heading 3910. Falls in 3926.90.45.90 as other plastic/rubber seal. Prevents oil leakage in combustion engines.
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
• Certify silicone as unmodified polymer per note (b)(2) for blends
• Separate from engine sets to avoid parts classification under 8708
• Check width/length under 38.1x45.7 cm for Free (B) per USNote on 3921