Mica Sheets

rigid mica plate
Mica Sheets

Mica sheets are also named mica plates and mica boards. And sometimes people call thin mica sheets mica paper. Mica sheets are mainly made from glued mica paper, stacked several pieces to a special thickness, separated by woven glass fiber cloth, then process in the heating press machine into mica sheets.

The thin mica sheets are mainly used to punch mica gaskets, which can be used as heating wire holders in machines, such as electric hair dryers, microwave ovens, and so on. The thick rigid mica sheet will be CNC processed into mica parts. That has high strength and can resist both high temperatures and high voltage.

Highmica has been engaged in the manufacture and export of various mica products. As a widely used mica sheet, we can die-cut various specifications according to customer needs.

Common mica sheets​

There are two kinds of common mica sheets, flexible mica sheets, and rigid mica sheets, which have excellent performance in high-temperature insulating materials, chemical corrosion resistance, and durability.

Flexible mica sheet

The flexible mica sheet is a temperature-resistant and insulating material, and it is made of high-quality muscovite paper bonded with silica gel.

Flexible mica sheets are suitable for electric heaters, heaters, air convectors, ovens, toasters, hairdryers and other industrial and household TVs, power capacitors, monitor displays, aerospace, aviation, communications, radar, heat-resistant skeleton sheets and other auxiliary materials. Divided into: electric heater sheet, electric heat protection sheet, and gasket, because the material is a natural mineral product, with no pollution, insulation, high-temperature resistance, heat insulation, good pressure resistance performance, etc.

flexible mica sheet

Rigid mica sheet

The hard mica sheet is composed of about 90% muscovite, phlogopite or synthetic mica paper, impregnated with high temperature resistant silicone resin.

Hard mica sheets are used as support insulation for heating elements in resistance wires, electric toasters, hair dryers, irons, curling irons, electric heating combs, strip heaters, base plate heaters, as well as gaskets and other appliances and applications with excellent Moisture and heat resistance, mechanical, and good electrical properties are required.

In the photo, the gray surface is a muscovite hard mica plate, the brown one in the middle is a phlogopite hard mica plate, and the white backside is a synthetic hard mica plate. Hard mica sheets can be processed into parts of different shapes.

mica sheet parts

Mica sheet properties

  • Excellent resistance to heat and even to open flame up to 1000℃.
  • Excellent electrical insulation.
  • High resistance to pressure.
  • Eco-friendly and non-toxic.

Application of mica sheet

  • USED as supporting insulation for resisting wire,  heating elements in the electric toaster, hairdryer…
  • heating elements for electrical & thermal mechanical equipment
  • construction of induction, arc, or high-frequency furnaces
  • high voltage applications
  • high thermal applications
  • industrial sealing & gasket industries (e.g. oil & gas distribution)

Specifications of mica sheet




Standard size


Rigid Mica Sheet



1000*2400mm, 1000*1200mm, 1000*600mm

For small punched mica part, High strength framework of heat, the insulator for high temperature and voltage elements

Flexible Mica Sheet

HP5(HP5M-1, HP5P-1, HP5S-1)


1000*2400mm, 1000*1200mm, 1000*600mm

Easy to winding or wrapping, for heating elements, furnace protection

Over thick Mica Sheet

HP5-G (HP5M-G, HP5P-G)


1000*2400mm, 1000*1200mm, 1000*600mm

High dielectric strength, suitable for machined mica parts with drilling, milling, and turning

Low Smoke Mica Sheet

HP5-L (HP5M-L, HP5P-L)


1000*2400mm, 1000*1200mm, 1000*600mm

Low smoke and blister-free for FDA heating elements resist high-temperature, like food toasters, microwave oven

Mica Sheet in Roll




Special designed Flexible Mica Sheet in Roll. That is very convenient for furnace use and industrial demand.

Special Mica Sheet

HP5-S (HP5M-S, HP5P-S)


1000*2400mm, 1000*1200mm, 1000*600mm

Insert strength material (steel sheet, woven), get extremely flexible toughness, mechanical strength, the special function for industrial use.

M – Musvocite), P – Phlogopite, S – Synthetic, L – Low Smook and blister-free, G – High Resin, High Strength

Welcome the customized design and inquiry.

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