Product Description
Battery Insulation Fish Paper | Vulcanized Fiber Electrical Insulation Sheet
Battery insulation fish paper is a durable, flexible, high-performance electrical insulator made from vulcanized fiber. It is widely used in lithium battery packs, motor windings, transformers, gaskets, and electrical appliances. This electrical-grade material offers excellent dielectric strength, mechanical toughness, and resistance to heat, oil, and abrasion. Available in custom shapes and thicknesses, it is the ideal choice for insulating 18650, 21700, prismatic cells, and busbars in battery assembly.
📄 Product Description
⚡ High Dielectric Strength
Withstands 4000 volts – ensures safe insulation between battery cells, terminals, and enclosure.
🔥 Temperature Resistance
Maintains integrity up to 130°C (green shell type) – ideal for high-temperature battery environments.
🧪 Superior Mechanical Properties
Excellent tensile strength, tear resistance, and flexibility – withstands bending, punching, and forming without cracking.
🛡️ Multi‑purpose Protection
Provides insulation, shielding, and anti-interference for sensitive electronic components.
✨ Key Specifications
- Material: Vulcanized fiber (high-grade electrical insulating paper)
- Color: Blue-black, white, natural (customizable)
- Temperature Resistance: Up to 130°C (continuous)
- Dielectric Strength: 4000V (withstands high voltage without breakdown)
- Thickness: 0.1mm – 1.5mm (customizable)
- Features: Good insulation, flexibility, water resistance, wear resistance, oil resistance, aging resistance
- Special Properties: High tear strength, rupture work, dynamic strength, no foaming, no glue flow
- Application Surface: Clean, dry, free of grease and oil before installation
🔧 Common Applications
🔋 Battery Packs
Insulation pads for 18650, 21700, 26650, and prismatic cells. Prevents short circuits between cells and nickel strips.
⚙️ Electrical Instruments
Gaskets, circuit breakers, fuse tubes, motor contact bushings, and transformer insulation.
🚗 Automotive Components
Insulation for EV battery modules, control units, and high-voltage systems.
🛤️ Industrial Equipment
Railroad track insulation, industrial machinery, and power distribution.
📐 Customization Services
• Precision die-cutting and laser cutting for any shape – round, square, or complex patterns
• Pre-cut gaskets for 18650, 21700, prismatic cell anode/cathode points
• Custom thickness from 0.1mm to 1.5mm
• Custom colors and packaging
• OEM/ODM services with fast turnaround
• Samples available for testing
🖼️ Product Gallery
✅ Why Choose Our Battery Insulation Fish Paper?
🏭 High-Quality Material
Made from premium vulcanized fiber with consistent thickness and excellent electrical properties.
🔧 Precision Fabrication
Custom die-cutting for 18650 anode insulators, prismatic cell separators, and complex battery pack shapes.
🌍 Global Standards
Complies with international electrical insulation standards, RoHS, and REACH.
📦 Fast & Reliable Service
Quick turnaround on custom orders, worldwide shipping, and dedicated support.
Contact us with your drawings or specifications. We provide free quotations, prototyping support, and bulk manufacturing. OEM/ODM welcome.
Primary: battery insulation fish paper · vulcanized fiber sheet · electrical insulation paper · lithium battery insulation · 18650 gasket paper · fish paper for battery pack · dielectric paper · high temperature insulation · battery spacer · transformer insulation
Performance: 4000V dielectric strength · 130°C temperature resistance · tear resistant · oil resistant · flexible insulator · UL recognized
Applications: EV battery insulation · prismatic cell separator · 18650 anode insulator · motor winding insulation · circuit breaker insulation · power tool battery pack
Other Battery Insulation Materials (FR4, Kapton Tape, PVC Heat Shrink)
