Polydimethylsiloxane (PDMS) Fluid from Mexico
Polydimethylsiloxane (PDMS) is a clear, viscous silicone polymer fluid used in lubricants, cosmetics, and as a release agent. It falls under HTS 3910.00.00.00 as a silicone in primary form, where the siloxane monomer units constitute 95% or more by weight of the polymer content per chapter notes.
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
• Verify monomer composition via supplier certificates to confirm 95% siloxane content for Chapter 39 classification
• Ensure SDS sheets detail primary form status to avoid misclassification as compounded products
• Check for REACH compliance if sourcing from EU for silicone fluids