Vinyl-Functional Silicone Polymer from Mexico
Vinyl-terminated silicone polymers are crosslinking agents for RTV silicones. Classified in HTS 3910.00.00.00 as primary silicones where siloxane units exceed 95% by weight.
Duty Rate — Mexico → United States
13%
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 vinyl content <5% total weight to meet 95% siloxane threshold
• Ship in nitrogen-blanketed containers to prevent premature curing
• Include reactivity data in entry summary