21700 Lithium Battery 3 Cell Solid Fish Paper Insulation Washer with Adhesive Backing

This 3-cell solid fish paper insulation washer is specially designed for 21700 cylindrical lithium battery packs. Made from high-quality fish paper (vulcanized fiber insulation material), it provides excellent electrical insulation, flame retardant protection, and mechanical strength for battery module assembly.

The adhesive backing design allows quick and accurate installation, improving assembly efficiency while ensuring stable positioning during battery pack production. It helps prevent short circuits caused by direct contact between battery cells and conductive components, enhancing overall battery safety and reliability.

• Designed for 3-cell solid 21700 lithium battery configurations
• Single-sided adhesive backing for easy installation
• Excellent electrical insulation performance
• Flame retardant, heat resistant, and durable
• Eco-friendly insulation material
• Precision die-cutting for customized battery applications

• 21700 lithium battery packs
• Cylindrical battery modules
• Energy storage battery systems
• Power tools and portable devices
• Custom battery insulation solutions

• Thickness, size, shape, and hole design
• Adhesive type and backing material
• OEM/ODM die-cut insulation components according to customer drawings