Viton Fluoroelastomer B-Type from Mexico
Viton B-type fluoroelastomer is a copolymer of vinylidene fluoride, hexafluoropropylene, and cure-site monomers, exceeding 95% by weight comonomer content. Used in primary form for high-temperature O-rings and diaphragms in chemical processing. Falls under elastomeric fluoropolymers in HTS 3904.69.10.00.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Require detailed polymer analysis reports to substantiate elastomeric nature and comonomer ratios
• Ensure declaration as 'primary forms' to avoid reclassification to finished goods tariffs