Polyester resin systems molded with random glass mat are used to produce sheet materials in thicknesses ranging from 1/32 inch to over 2 inches.
In addition to molded sheet, popular grades are also available in pultruded sheet formats, offered in a wide variety of configurations.
As with pultruded angles and channels, modern polyester resin systems provide exceptional versatility, making them suitable for a broad range of electrical and mechanical applications.
One widely used grade, GPO-3, is both flame-retardant and track-resistant, meeting UL Temperature Class B (130°C) standards. It offers low thermal conductivity and minimal thermal expansion, making it ideal for all but the most extreme electrical environments.
GPO-1 grades are available from general-purpose Class B (130°C) up to high-performance Class H (180°C+), supporting applications with more demanding thermal requirements.
Additionally, glass vinylester formulations are available in the same sheet configurations and offer outstanding moisture, chemical, corrosion, and UV resistance, making them ideal for use in harsh or specialized environments across many industries.
Popular Applications:
- Panelboards, Barriers, Enclosures, Step Blocks
- Transformer Core Windings
- Reactor Core Insulation
- Winding Combs
- HV Barriers, Shields, Terminal Blocks
- Bus Supports and Insulation
- Wave Solder Pallets
- Motor Slot Wedges, Topsticks, End Laminations
- Arc Chutes and Barriers
- Electrode Insulation + Supports
- Bobbins, End Plates, Spacers, Shims
- Fuse Tubes
- Cable Supports
For more details click here to visit our Material Specification Library Page (Size Charts and Spec Sheets).
