Silicone Elastomer Base Uncured from Mexico
Uncured silicone elastomer base contains silica filler and peroxide catalyst. Still classified as primary form under HTS 3910.00.00.00 if polymer content predominates per notes.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Document filler <50% total weight to maintain primary polymer status
• Temperature-controlled shipping prevents pre-cure issues
• Include shelf-life data in commercial invoice