Premium Highland Barley Insulation Paper Rings for 18650/20650/21700/32650 Batteries

High-quality barley paper construction ensures superior heat resistance and electrical insulation for enhanced battery safety. Precision-cut rings feature smooth edges and consistent thickness (0.1-0.3mm customizable) for perfect fitment.

Multi-cell compatibility covers 18650, 20650, 21700, and 32650 battery types with factory-direct bulk pricing. Natural fiber material prevents short circuits while allowing optimal heat dissipation.

Essential for DIY battery packs, e-bike conversions, power tool maintenance, and energy storage systems. OEM-grade manufacturing with strict QC for vibration resistance and long-term durability.

Stock up wholesale – global shipping with competitive MOQ for businesses and makers. Inventory available for immediate dispatch from our bonded warehouses.