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Polyester Glass

POLYESTER GLASS is specifically, cured unsaturated polyester resin in a non-woven glass mat, containing aluminium trihydrate, less than 2% organic peroxides and metallic stearates.

Available in sheet format this material is exclusively a low voltage electrical insulator although it has been used as a low cost non-metallic substitute for jigs and fixtures.

This material is classified under NEMA specifications as Type GPO-1, 2 or 3.

Polyester glass can be characterised by the following properties:

  • Low cost
  • Low temperature properties
  • Low electrical insulation value
  • Good punching grade

Fields of application: slip ring bodies, busbar supports, low temperature electrical insulators and terminal boards.