MC 60

GLASS BONDED MICA (GBM)

A ceramoplastic, is a bridge between epoxy, frp and ceramic – combining the best properties of these materials.

This is a unique product wherein mica (which is a proven high reliability electrical insulating material) is the principal constituent and glass which is an inorganic material is used as a binder for mica.

Their bonding is done at a temperature of approximately 800 degrees Celcius under high pressure.

GBM is a High Voltage, High Tensile, and High Temperature insulating material.

The products are marketed under various product names as Brush Holder Support Insulator, Terminal Support Insulator, Insulating Rod, and Arcing Chamber/Arc Chute etc.

Properties

Completely inorganic – does not burn
High dielectric strength & arc resistance
Low thermal conductivity
Withstands thermal cycling
Impervious to moisture, oils, and gases
Can be machined: drilled, tapped or threaded with carbide tools
Ability to be silicone or PTFE coated.
Used for Varied Operating temperatures of upto 400°C
Metal inserts can be embeded: Steel, non ferrous or SS.
Not hazardous unlike asbestos based insulating materials

Applications

The unique combination of the above properties make GBM the first choice for insulators in the traction field and for other areas requiring high reliability.

Insulators in Traction
High Voltage applications
Bus bar supports
Stand off insulators

Other areas requiring a mechanically, thermally stable and ability to work in harsh environments.