Thermosetting plastics:Sepentoxy® FR4 Fiber Glass Epoxy Sheet

0044-7894 685 275
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Sepentoxy® FR4 Fiber Glass Epoxy Sheet

Material Introduction

FR4 fiber glass epoxy sheet is produced from electrical glass cloth that has been impregnated with epoxy resin under heat and pressure. This kind of polymer is highly distinguished by impressive mechanical strength and dielectric properties, as well as superior inertness to all kinds of solvents and acid chemical medicines.

Our reinforced thermoset is the industry-proven material for parts in electric motors and electronic appliances, and is applicable for humid environment and insulating oil.

Material Size

Type Thickness(mm) Width × length (mm)
FR4 fiber glass epoxy sheet 0.5 to 1.5
2 to 2.5
3 to 50
60 to 80
1020 × 1220
1020 × 1220
1020 × 1220
1020 × 1220

Technological requirement

This fiber glass epoxy sheet is endowed with smooth surface with absolutely no bubbles, impurities or obvious defects like scratch, impression or being unevenly colored. Edges should be clean and free from separation and cracks. However, it is acceptable that there is a little bit of color mottle and scratch.

Material Application

1. Parts for chemical equipment
2. General machinery parts and gears
3. Base plate, support and guard panel for electric generator
4. Insulating parts for transformer, inverter and electric motor


We supply our fiber glass epoxy sheet in light green color.

Contact Cylex Plastic's corporate headquarters in 5 Carpenter Rd,Edgbaston Birmingham,West Midlands B15 2JT United Kingdom at 0044-7894 685 275 for more specific information.