Mica Tube insulation
Type: mica tube Material: Mica Application: High voltage and temperature Rated Voltage: >20kv/mm Tensile Strength: >200N/mm2
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Product Introduction
Mica Tube insulation
Mica tube is a rigid, high-temperature tubular insulation material manufactured from high-purity muscovite or phlogopite mica paper, bonded with a high-performance silicone or inorganic adhesive and reinforced with a single-sided backing material. It delivers exceptional dielectric strength, mechanical rigidity, and thermal stability - making it the preferred solution for electrode insulation, bushing sleeves, and outlet insulation in motors, transformers, furnaces, and high-voltage electrical equipment.
Hangzhou Weshare specializes in customized mica solutions. With in-house deep-processing capabilities including CNC machining, punching, drilling, and milling, we produce precision mica parts - tubes, washers, spacers, flanges, discs, gaskets, and complex machined components - to your exact drawings and specifications. Our products serve industries ranging from household appliances and metallurgy to petrochemical, rail transit, automotive, shipbuilding, and military applications.
Customized dimension according to customer's drawing or requirements.
Advantage
1. Outstanding Electrical Insulation Dielectric strength exceeding 20 kV/mm ensures reliable insulation performance in high-voltage environments, protecting electrodes, conductors, and busbars from electrical breakdown.
2. Extreme Temperature Resistance Phlogopite-grade tubes withstand continuous temperatures up to 700°C and intermittent peaks of 1,000°C - ideal for furnace components, heating elements, and high-temperature motor windings. Muscovite-grade tubes are rated for 500°C continuous use, suitable for most industrial electrical insulation applications.
3. High Mechanical Strength With tensile strength above 200 N/mm², mica tubes maintain structural integrity under mechanical stress, vibration, and thermal cycling. They can be machined, drilled, and cut to tight tolerances without cracking or delamination.
4. Full Customization Manufactured to your exact specifications - inner and outer diameter, wall thickness, length, mica type, and adhesive system (silicone or inorganic). Send us your drawing and we will deliver.
Applications
Electrode and bushing insulation in motors and generators
Outlet sleeves in transformers and switchgear
Heating element supports in industrial furnaces and kilns
Insulating liners for high-voltage connectors and terminals
Thermal barriers in automotive, aerospace, and defense equipment
Customization & Ordering
Dimensions: Custom inner/outer diameter, wall thickness, and length per your drawing
Material Grade: Muscovite (500°C continuous) or Phlogopite (700°C continuous)
Adhesive Type: Silicone (standard) or inorganic binder (for ultra-high-temperature applications)
Additional Machining: CNC drilling, slotting, notching, and precision cutting available
Package
As per customer's requirements
Storage
Two years quality guarantee from production date, under proper storage with temperature ≤40℃ and humidity ≥60% with original package.
|
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 ℃ |
500 |
700 |
-- |
|
Intermittent ℃ |
800 |
1000 |
-- |
|
|
Water Absorption 24h/23℃ % |
≤1.5 |
≤1.5 |
ISO 62 |
|
|
Dielectric strength Kv/mm |
>20 |
>20 |
IEC60243 |
|
Specifications
1.Good insulation capability
2.Higher mechanical strength
Package:
Wooden pallet
Payment:
Western union, paypal, T/T, L/C
FAQ:
1. What is the difference between muscovite and phlogopite mica tubes?
Muscovite (M-grade) is the standard choice for most electrical insulation applications, rated for continuous use at 500°C. Phlogopite (P-grade) withstands up to 700°C continuously and is recommended for high-temperature environments such as furnaces and heating equipment.
2. Can you produce tubes to my exact dimensions?
Yes. All dimensions - inner diameter, outer diameter, wall thickness, and length - are manufactured to your specifications or drawing.
3. Do you provide samples?
Yes. Standard samples are free of charge. The buyer covers the shipping cost.
4. What is your typical delivery time?
Stock specifications ship within 5–10 working days. Custom orders typically require 15–20 working days, depending on quantity and complexity.
5. What are your payment terms?
T/T, L/C, Western Union, and PayPal are all accepted. Terms are negotiable based on order volume and customer relationship.
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