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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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