Viton Fluoroelastomer B-Type from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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