FR4 3240 Epoxy Fiberglass Insulation Board – High Temperature Resistant

Designed for demanding electrical and industrial applications, this 3240 Epoxy Fiberglass Insulation Board provides excellent electrical insulation, mechanical strength and heat resistance. Manufactured from high-quality fiberglass reinforced epoxy resin, it offers reliable performance in environments requiring stable insulation properties.

The FR4-style laminate sheet features a smooth surface finish and strong structural stability, making it suitable for machining, cutting and fabrication into custom insulating components. With excellent dielectric properties, moisture resistance and arc resistance, it is widely used in electrical equipment, electronics, machinery and industrial insulation applications.

Available in multiple lengths, thicknesses and colours, this versatile epoxy board can be customised for different project requirements, including professional manufacturing and DIY engineering applications.

Key Features

• Made from fiberglass reinforced epoxy resin
• 3240 epoxy laminate insulation material
• High temperature resistant construction
• Excellent electrical insulation properties
• Good dielectric strength and arc resistance
• Strong mechanical performance and dimensional stability
• Suitable for high humidity environments
• Smooth surface finish for easy machining
• Low curing shrinkage compared with many resin materials
• Temperature rating: Class B (up to approximately 155°C)
• Available colours:
  • Natural Yellow
  • Green
  • Black
  • White
• Available lengths:
  • 50cm
  • 100cm
• Thickness options from 0.1mm to 50mm
• Custom thickness and dimensions available
• Suitable for electrical insulation parts, structural components, machinery and electronics projects

Package Includes

• 1 × 3240 Epoxy Fiberglass Insulation Board (Selected Size & Thickness)