Mica Sheet
800–1000°C
Main applications
the outstanding combined insulation of mica sheet
Key Features
Excellent dielectric performance
Mica's layered structure maintains stable electrical insulation even at high voltage
Heat resistant above 800°C
An inorganic mineral — retaining its insulating performance where organic insulators would burn away
Easy to machine
Cut, drilled and formed — made into gaskets, pads, covers and other shapes
Moisture and chemical resistance
Mica's chemical resistance means acid and alkali tolerance, with no loss of insulation in damp conditions
Composite board option
Pure mica or glass-fiber reinforced mica board — chosen for mechanical strength or insulating performance
Specifications
| Material | Natural or synthetic mica, optionally glass-fiber reinforced |
| Service temperature | 800–1000°C (composite mica board) |
| Dielectric strength | Approx. 1–3 kV/mm and above |
| Thickness | 0.5T – 10T (custom available) |
| Standard sizes | Custom cut and machined to order |
| Main applications | Heater insulation pads, insulating liners in electrical equipment, high-temperature gaskets |
Applications
Electrical insulation
- •Insulation pads and liners for industrial heaters
- •Insulating components in transformers and motors
High-temperature electrical equipment
- •Insulating components in electric furnaces
- •Insulating supports for heating coils
Gaskets & seals
- •High-temperature electrically insulating gaskets
- •Packing at hot joints requiring insulation
Specialty uses
- •Internal insulation in microwave and heating appliances
- •High-temperature insulation for aerospace
Notes
- ※Glass-fiber reinforced mica board has better mechanical strength than pure mica — the right choice where machining and forming are needed.
- ※Tell us your dielectric strength and temperature requirements and we will recommend the mica grade and thickness.