3240 Epoxy Board with 0.3mm - 40mm Thickness 160℃ Glass Transition and 300Mpa Tensile Strength

Factory-Direct 3240 Epoxy Board | Fiberglass Reinforced, Uniform Thickness & Smooth Surface

Our flagship product—Heat-Resistant Epoxy Glass Cloth Fiber Board (also called 3240 Board, Epoxy Fiberglass Sheet, or Insulating Glass Fiber Material Board)—is a high-performance laminated insulation material for tough industrial and electrical uses. Made via advanced lamination, it uses top-grade electrical alkali-free glass fiber cloth as the base and premium epoxy phenolic resin as the binder, formed into a uniform, dense, durable structure through soaking, baking, and hot-pressing.

1. High Heat Resistance: Meets Class B heat resistance standards (continuous operating temperature up to 130°C), maintaining stable mechanical and electrical properties even in high-temperature environments, with excellent resistance to thermal aging and deformation.
2. Superior Insulation Performance: Offers excellent dielectric strength (rated voltage up to 600V) and low dielectric loss, providing reliable insulation protection for electrical components and preventing leakage and short circuits in high-voltage scenarios.
3. Strong Mechanical Strength: Features high tensile strength, impact resistance, and dimensional stability—resisting warping or cracking under external pressure.
4. Easy Precision Machining: With a smooth surface, it enables precise processes like cutting and drilling, resulting in neat edges without burrs, suitable for fine assembly needs.
5. Customization Adaptability: Supports customized thickness and size per customer requirements, flexibly matching diverse installation and usage needs in industrial and electrical scenarios.

• Battery Packs: Insulation layers for lithium-ion/NiMH batteries.
• Electrical: Switchgear, transformer oil barriers, high/low-voltage.
• Tooling & Molds: PCB/ICT, mechanical molds.

1. Flexible and diverse products with thousands of product specifications to meet the diverse needs of buyers.
2. OEM and ODM designs and lables are welcome.
3. The minimum order quantity is low and samples can be customized.
4. Short production delivery cycle, fast delivery speed of the entire cabinet.
5. Multiple payment methods facilitate customer payment.