Mica Tube
Your Professional Mica Tube Supplier
Hangzhou Weshare Import & Export Co.,Ltd. is a leading Chinese manufacturer and exporter of transformer components, electrical insulation materials and consulting company. Weshare founded in 2005 by one specialized sales in transformer accessories. Most of our products are used in oil and dry transformers, electrical motors, generators and electronic products.Our mission is to ensure appropriate product quality while satisfying the needs of our customers is our prime objective and represents the core principle of our business activities.
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Insulation Mica TubeInsulation Mica Tube M& P is a silicon bonded Muscovite or Phlogopite mica tube, a hard pipeinsulating material prepared by using Muscovite or Phlogopite mica paper With silicon bond agent and...read more
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High Temperature Mica Tubeswith high-temperature resistant resin and rolled through high temperature and high pressureread more
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Mica TubingMica Tubing is formed by muscovite paper or phlogopite paper fixed with silicon resin, and processed by roll form. Length: 10mm, 20mm, 50mm, 100mm, 300mm, 500, ……1100mm Diameter: 8mm, 10mm,...read more
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High Temperature Resistance Mica TubeWe provide phlogopite tubes, muscovite tubes, special-shaped mica parts.High Temperature Resistance Mica Tube M& P is a silicon bonded Muscovite or Phlogopite mica tube, a hard pipeinsulating...read more
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Mica Tube InsulationInner diameter: 1mm~300mm (CNC machining, tolerance ±0.02mm)read more
Wall thickness: 0.3mm~10mm (supports gradient design)
Logo: The packaging and product surface can be added with the logo... -
Electrical Mica TubeElectrical Mica Tube is formed by muscovite paper or phlogopite paper fixed with silicon resin, and processed by roll form. Electrical Mica Tube Length: 10mm, 20mm, 50mm, 100mm, 300mm, 500,...read more
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Mica Tube Electrical SizesMica Tube Electrical Sizes is formed by muscovite paper or phlogopite paper fixed with silicon resin, and processed by roll form. Tolerance standards: In general, we produce according to the...read more
Why Choose Us
Quality Assurance
Certified by UL, SGS, and ISO9001, Weshare upholds stringent quality standards.
Extensive Experience
Weshare, since 2005, excels in transformer accessories and electrical engineering.
Export markets
With a strong focus on export markets, we have successfully captured significant market share in East Asia, North Europe, the Middle East, South America, Egypt, and East Africa. Our dedication to ensuring appropriate product quality while meeting customer needs is the cornerstone of our business philosophy.
Product Application
Our company boasts a wide array of products used in oil and dry transformers, electrical motors, generators, and electronic devices.
Product Description
|
Mica Tubing Type |
MICA TUBE |
|
Test Standard |
|
|
|
M |
P |
|
|
|
Mica content % |
≥90 |
≥90 |
IEC60371-2 |
|
|
Bond content % |
≤10 |
≤10 |
IEC60371-2 |
|
|
Density g/cm3 |
1.6 - 1.8 |
1.6 - 1.8 |
IEC60371-2 |
|
|
Heat Resistance |
Continuous °C |
500 |
700 |
1 |
|
|
Intermittent °C |
800 |
1000 |
1 |
|
Water Absorption 24h/23°C% |
≤1.5 |
≤1.5 |
ISO 62 |
|
|
Dielectric strength Kv/mm |
>20 |
>20 |
IEC60243 |
|
|
Thickness (mm) |
\multicolumn{2}{ |
c |
}{Different size upon request} |
IEC60371-2 |
|
Dimensions (mm) |
\multicolumn{2}{ |
c |
}{Different size upon request} |
IEC60371-2 |
|
Tolerances (mm) |
Standard ID(mm) |
ID (mm) |
OD(mm) |
|
|
|
<10 |
±0.3 |
±0.4 |
IEC60371-2 |
|
10 - 20 |
±0.4 |
±0.5 |
||
|
21 - 50 |
±0.5 |
±0.7 |
||
|
51 - 100 |
±0.6 |
±1.0 |
||
|
101 - 200 |
±0.8 |
±1.2 |
||
|
201 - 300 |
±1.0 |
±1.5 |
Features of Mica Tube
High-temperature resistance
Mica tubes can be used in high-temperature environments, can resist temperatures as high as 1000 ℃, and are suitable for insulation and heat insulation of high-temperature equipment.


Corrosion resistance
Mica tube has strong corrosion resistance, can resist the erosion of acid, alkali, salt, and other corrosive media, and maintains its stable performance.
Electrical insulation properties
Mica tubes have good electrical insulation properties and can be used as insulating materials for electrical equipment to protect it from electrical shock.


Heat insulation performance
Mica tubes have good heat insulation performance, can prevent heat conduction, and are widely used in high-temperature equipment for heat insulation layers.
Low thermal expansion
The thermal expansion coefficient of the mica tube is low, which can keep the shape stable when the temperature changes, and it is not easy to deform or crack.


Good mechanical strength
The mica tube has good mechanical strength and can be processed. Mica tubes can be cut to different lengths, drilled with holes, or shaped. When you have a unique design demand, please send us the design file; we can process it according to your customized demand.
Mica Tube Technique Data
|
Name |
Unit |
Muscovite Mica Tube |
Phlogopite Mica Tube |
|
Water absorption |
% |
≤1 |
≤1 |
|
Mechanical strength |
Mpa |
≥10 |
≥10 |
|
Dielectric strength |
KV/mm |
≥10 |
≥10 |
|
Density |
g/cm^3 |
1.6~1.9 |
1.6~1.9 |
|
Adhesive content |
% |
10 |
10 |
|
Mica content |
% |
90 |
90 |
|
Heat resistance continuous operation |
℃ |
500 |
750 |
|
Heat resistance intermittent operation |
℃ |
750 |
1000 |
|
Burning Test |
/ |
Burning to temperature 750 ℃, Smokeless or seldom. Appearance keeps well. |
|
|
Appearance |
/ |
The mica tube distributed evenly, with no impurity, grease spot, not clicked, color and luster is beautiful, etc. |
|
|
Flame resistance |
/ |
UL94V-0 |
UL94V-0 |
The Mica Tube Customized Processes The Following Steps
Confirm specifications
Customers need to provide detailed specifications such as length, inner diameter, outer diameter, thickness, and material of mica tubes.
Material selection
Select the suitable mica material according to the customer’s requirements and application. Usually, we need to send you the temperature resistance demand. We will suggest muscovite mica and phlogopite mica.
Glue mica paper
After confirming the mica tube size and material, our mica sheet glue machine will make the glued mica paper. The mica paper width is 1010mm, and the regular mica tube length is 1m.
Mica Tube Mold
The mica tubes are made on the mold; the mold’s outer diameter fits the mica tube’s inner diameter. We have a stock of different sizes of molds. When you have a new demand, please tell us, and we will check the stock, then offer the price and the finishing time
Make Mica Tube & Bake
Roll the glued mica paper on the tube mold tightly, and knead the mica tube to the tight structure. Then, pull out the mold from the mica tube and put the mica tube back in the oven.
Quality Inspection & Packing
Inspect the mica tubes’ quality, including testing of appearance quality, dimensional accuracy, bending strength, and other indicators. Then, the mica tube will be packed safely for transportation.
Manufacturing Process of Mica Tube

Material Selection
The process begins by choosing high-quality mica sheets. These sheets are selected for their durability and performance in harsh conditions.

Bonding with Resin
To enhance strength, the mica sheets are bonded with resin-based substances like silicone. This step ensures the tubes are both robust and functional.

Shaping and Cutting
The mica is precisely cut and shaped into tubes. These tubes can be customized in terms of length, diameter, and thickness to meet specific application needs.

Testing and Quality Control
Each mica tube undergoes rigorous testing. This ensures they meet high-performance standards for insulation, temperature resistance, and mechanical strength.
Mica Tubes in Different Industries
Steel Manufacturing and Electric Arc Furnaces
Mica tubes play a crucial role in electric arc furnaces used for steel manufacturing. They provide essential thermal and electrical resistance, protecting components from extreme heat during the steel production process.
Electronics and Power Systems
In power electronics, mica tubes are used to insulate critical components such as capacitors, resistors, and high-power transmitters. Their high precision and reliability make them perfect for these high-stakes applications where performance is key.
Aerospace and Defense Electronics
Mica tubes are integral in defense electronics, providing high-temperature resistance and electrical insulation. These properties are essential for military-grade equipment, where safety and efficiency are paramount.
Domestic Appliances
You'll also find mica tubes in everyday household appliances, like toasters and hairdryers. In these products, mica tubes ensure both safety and energy efficiency, making them reliable and cost-effective solutions for home use.
FAQ
As one of the leading mica tube suppliers in China, we warmly welcome you to wholesale high-grade mica tube made in China here from our factory. All our products are with high quality and competitive price.













