Mica Sheets

Mica Sheets
Mica Sheets

Mica sheets, also known as laminated ones, are made of layers of muscovite (or phlogopite) paper and silicone (or epoxy) that are heat-pressed and processed to form a flat and uniform thickness.

Mica flakes possess excellent electrical, thermal, and mechanical properties, making them ideal materials for various industrial and scientific applications.

Mica sheets can be processed into various insulating components, including washers, gaskets, covers, and seals, we provide mica sheets in various sizes and styles for you to choose from, in stock, and ready to ship, please get in touch with us now.

Mica Sheets

Flexible Mica Sheets is one popular insulation material with multiple layers of phlogopite/muscovite mica paper with high-temperature silicone resin, it’s bendable and high-tensile strength to be punched to insulation gaskets or mats for appliances and furnaces.

Features of flexible mica sheet:

  • Flexible and high-tensile strength, most popular thickness 0.5~1.0mm, will be punched to heating protect mat, washers, and insulation sealing parts.
  • Excellent thermal resistance, muscovite mica resists 500~700℃, Phlogopite mica resists 750~850℃, Synthetic/Muscovite Calcined mica resist more than 1000℃, most popular phlogopite mica sheets are used in the furnace.
  • Excellent electric insulation, normally the breakdown voltage is more than 16KV/mm.
  • Different flexible can be customized for different uses. 
  • Customized mica sheet inserts with glass-fiber cloth and stainless steel woven are available for special demand.
  • Eco-friendly and non-asbestos.

Flexible mica sheet application:

  • The flexible mica sheet can be bent and punched according to the CAD design. The elastic mica sheet mat is very suitable as an insulating mat for equipment, such as microwave ovens, and toasters.
  • The flexible mica sheet can be cut into strips and rolled into the sealing element, and the perfect expansion performance makes the sealing joint, which can maintain good performance even at high temperatures, such as automobile exhaust pipes.
  • Flexible phlogopite sheets are resistant to high temperatures above 800°C and are widely used in induction, arc, and high-frequency furnaces. Mica sheets, such as ceramics, can also be combined with other materials to achieve multi-functions and used according to customer needs.

Rigid Mica Sheets also named Mica Board, Mica Plate, which are made of appr 90% Muscovite(or Phlogopite) and 10% silicone (or epoxy) resin by heating pressing process. Mica sheets provide excellent high-voltage electrical insulation at high temperatures.

Features of Rigid Mica Sheet:

  • Excellent thermal resistance, muscovite mica resist 500~700℃, Phlogopite mica resist 750~850℃, Synthetic/Muscovite Calcined mica resist more than 1000℃.
  • Excellent electric insulation, normally the breakdown voltage is more than 16KV/mm.
  • The rigid mica sheet has a tight structure without air bubbles or holes, Stamping high flexural strength, smooth cutting edge.
  • Excellent mechanical strength and double heating pressing time ensure extremely high density for over-thick mica board, it’s suited for sawing, drilling, grinding, laser, and waterjet cutting.
  • Mica sheet is distributed evenly, with no impurity, and color and luster are beautiful.
  • One-time formed 3D shape by mold tool is available.
  • Eco-friendly and non-asbestos.

Rigid mica sheet application:

  • Mica board has excellent mechanical strength and is suitable for precision/accurate sawing, drilling, and grinding with high-performance tools, and can be used as an insulating element for high-temperature and high-pressure equipment.
  • Insulation can be made into heating element cards, gaskets, partitions, or covers. Such as hair dryer heating wire brackets and so on.
  • Widely used in heating household appliances, equipment, electric furnaces, motor insulation, transformer power generation and distribution, electric/hybrid vehicles, etc.
  • A 3D-shaped mica protective cover can be provided, which can be molded at one time through the mold.
Muscovite Mica Sheet
Muscovite Mica Sheet

Muscovite is a silicate mineral that contains large amounts of sodium, aluminum, and silicon and is usually white or off-white. It has good insulating properties and heat resistance, so it is often used in the manufacture of electrical insulation materials and high-temperature refractory materials.

Phlogopite Mica Sheet​

Phlogopite Mica Sheet
Phlogopite Mica Sheet

Phlogopite is a mica mineral that contains metal elements such as copper, silver, gold, tungsten, and lithium. Its physical properties are very stable, so it is widely used in electronic components in special environments such as high temperature, high pressure, and high frequency.

Synthetic Mica Sheet

Synthetic Mica Sheet
Synthetic Mica Sheet

Synthetic mica board is a kind of artificially manufactured mica board, due to its unique structure and chemical composition, it has good mechanical properties, corrosion resistance, heat resistance, and insulation properties. Synthetic mica board is usually used in the manufacture of refractory materials, electronic components, high-temperature seals, high-voltage cables motor insulation, etc.

Specifications of mica sheet




Standard size


Rigid Mica Sheet



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

Excellent flexural strength to punch to mica part for high strength framework of heating, electric heating appliance & equipment

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 density, mechanical strength, suitable for sawing, drilling, grinding, and even by waterjet cutting method

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.

How to make mica sheets?

The laminate mica sheets production steps are as follows:

  1. Gluing high-quality muscovite mica paper, phlogopite mica paper, or synthetic mica paper with high-temperature silicon resin.
  2. Cutting glued mica paper to sizes 1020*2420mm, and 1020*1220mm, and stack up the glued mica paper for different thicknesses.
  3. Heating press the mica paper to mica sheets, 20+ years of experience in making high-quality mica sheets.
  4. Cutting the mica sheets to size: 1000*600mm, 1000*1200mm, and 1000*2400mm, then packing them in cartons and wooden pallets.

Mica Sheets packing & delivery

Mica sheets are packed in PE film, carton boxes, each box is about 50kgs.

Then about 20 carton boxes/1000kg mica sheets were fixed in wooden pallets.

(Size: 1200*1000mm or 2400*1000mm) for ocean transport.

We have our truck to send the products directly to Shenzhen Port, Shanghai Port…

mica sheet packing

Why buy mica sheets from us?

    1. We have 20+ years of manufacturing experience, control the quality of goods and stability, and also provide competitive prices. 
    2. We are committed to meeting customer requirements, delivering on time, and continuously improving the products and services we manufacture. 
    3. Our advanced manufacturing equipment and mature and experienced research and development technology team allow us to fully control the production process and product quality.

Customers reviews

I risked trying HighMica as we have a new project need the mica products. I sent them the specs with some details, their technology team provide some suggestions. we received samples soon, after adjust the specifications detail, we are happy with the final quality, I would be happy to recommend them to anyone.
Senior Procurement Specialist
I used to bought the mica products from local trader for many years, and while the relationship was initially good. Due to cost pressure and stable supply, we decided to give HighMica a chance with a small order. They deliver on time, have accuracy specification & quality, and also attention to detail.
Assistant Manager