Button Cell Battery Insulator Rings
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If generic plastic spacers not battery-specific
Undifferentiated plastic articles fall under Chapter 39 rather than functional battery parts.
If for rechargeable button cells
Insulators designed for secondary button batteries classify under accumulator parts.
If complete primary battery rather than separate part
Assembled cells with installed insulators import as complete primary batteries under 8501.
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Import Tips & Compliance
• 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
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