Silicone Elastomer Base Uncured from China
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 — China → United States
40.5%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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