Vinyl-Functional Silicone Polymer from Canada
Vinyl-terminated silicone polymers are crosslinking agents for RTV silicones. Classified in HTS 3910.00.00.00 as primary silicones where siloxane units exceed 95% by weight.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Certify vinyl content <5% total weight to meet 95% siloxane threshold
• Ship in nitrogen-blanketed containers to prevent premature curing
• Include reactivity data in entry summary