Button Cell Battery Insulator Rings from Mexico
Plastic insulator rings that separate anode and cathode in silver oxide button primary batteries (e.g., SR44). These prevent internal short circuits in the coin-shaped non-rechargeable cells. As integral safety parts, they qualify under HTS 8506.90.00.00 for primary battery parts.
Duty Rate — Mexico → United States
12.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include cross-sectional diagrams showing ring placement in button cell assembly for customs verification
• Certify plastic material meets RoHS and flammability standards common for battery safety parts