Viton Fluoroelastomer B-Type from China
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 — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
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