Product Gallery

See Our Mica Tubes in Detail

From precision-wound insulation sleeves to finished products ready for motor coils, heating elements, and HV applications — every tube is inspected for dimensional accuracy and dielectric performance.

Mica Tube

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Varied Sizes Mica tubes in different diameters and lengths - ID 3-100mm, length 50-1000mm customizable

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Cross-Section Mica tube cross-section showing multi-layer wound construction and uniform wall thickness

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Motor App

Mica tube application in electric motor - rotor and stator bar insulation

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Furnace App Mica tube application wrapping furnace heating element and thermocouple wires

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Custom Cut Mica tube custom-cut to length for HV transformer busbar sleeving and automotive sensors

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Key Features

Six Properties That Define Our Mica Tubes

Every tube is manufactured to rigorous quality standards — verified per production batch per IEC 60371-2 and IEC 60243-1 test methods in our in-house QC laboratory.

◆ 01

Outstanding Electrical Insulation

Dielectric strength of 15-30 kV/mm effectively insulates conductors and rods in low to high voltage systems (1 kV-50 kV) — preventing short circuits and arcing.

◆ 02

Extreme Temperature Resistance

Withstands continuous working temperatures from 400°C to 1000°C (depending on mica type) — maintains stability in furnace heating elements and engine bays.

◆ 03

Structural Durability

Strong yet lightweight with tensile strength ≥20 MPa — resists deformation from mechanical stress or vibration, ensuring long-term protection of enclosed components.

◆ 04

Flame Retardancy

Classified as non-combustible with UL94 V-0 rating — does not release toxic fumes, enhancing safety of enclosed electrical systems and critical equipment.

◆ 05

Chemical & Moisture Resistance

Resistant to oils, weak acids, and alkalis. Moisture absorption ≤ 1.0% — ensures consistent performance in humid or industrial environments.

◆ 06

Versatile Adaptability

Available in various diameters and lengths with smooth inner walls — allowing easy insertion of wires or rods without damaging the insulation layer during installation.

Specifications

Four Dimensions to Customize — Matched to Your Application

Every mica tube can be customized across four core dimensions. Tell us your wire diameter, voltage rating, and operating temperature — we match the right ID, wall, length, and material grade.

3–100 mm

Inner Diameter (ID)

Customizable from 3mm for fine sensor wires up to 100mm for large industrial busbars and heating rods. Specify your wire or rod diameter — we match with ~1-2mm clearance for smooth insertion.

3–10mm: sensor wires
10–30mm: motor bars
30–100mm: busbars, rods

0.5–5 mm

Wall Thickness

0.5mm for tight-space flexible sleeving up to 5mm for heavy-duty mechanical protection. Thicker walls = higher dielectric withstand voltage and better mechanical rigidity.

0.5–1mm: light insulation
1–3mm: standard duty
3–5mm: heavy-duty HV

50–1000 mm

Length Options

Standard stock lengths 50mm to 1000mm. Custom lengths for large industrial equipment available — cut to your exact specification with clean-cut ends ready for installation.

50–200mm: short sleeves
200–500mm: motor coils
500–1000mm: long runs

3 Grades

Material Grades

Three material options based on your peak operating temperature. Muscovite for moderate temps and cost-sensitive applications, phlogopite for industrial heat, synthetic for extreme environments.

Muscovite: up to 600°C
Phlogopite: up to 800°C
Synthetic: up to 1000°C

Technical Specifications

Muscovite vs Phlogopite Technical Comparison

Technical parameters of our mica tubes. All batches tested per IEC 60371-2, IEC 60243-1, and UL 94 standards.

Mica Tube Technical Data

◆ Muscovite & Phlogopite Grades · Rev. 2025

◆ Certified

Property	Sub-Item / Unit	MuscoviteWhite	PhlogopiteGold	Test Method
Mica Content	%	≈ 85	≈ 85	IEC 60371-2
Binder Content	%	≈ 15	≈ 15	IEC 60371-2
Density	g/cm³	1.6 – 2.2	1.6 – 2.2	IEC 60371-2
Continuous Temp	°C	500	700	—
Intermittent Temp	°C	800	1000	—
Weight Loss @ 500°C	%	< 1	< 1	IEC 60371-2
Weight Loss @ 700°C	%	< 2	< 2	IEC 60371-2
Dielectric Strength	kV/mm	> 1.5	> 1.5	IEC 60243-1
Insulation Resistance @ 23°C	Ω·cm	10¹⁶	10¹⁶	IEC 60243-1
Flame Rating	—	UL 94 V-0	UL 94 V-0	UL 94

Core Applications

Five Industries That Specify Our Mica Tubes

From motor rotor insulation to automotive engine bay sensors — wherever high-temperature electrical isolation around wires, rods, or bars is required.

Motors & Generators

Insulating rotor and stator bars, protecting them from high temperatures and electrical interference within the motor housing. Ensures reliable operation and extends motor service life.

Industrial Furnaces

Wrapping heating elements, thermocouples, and sensor wires — protecting them from direct heat while ensuring precise temperature measurement. Critical for process control reliability.

Household Appliances

Insulating heating rods in ovens, toasters, and industrial heaters — preventing heat transfer to surrounding components and improving energy efficiency. Safe, reliable operation.

High Voltage Equipment

Sleeving high-voltage cables and busbars in transformers and switchgear — providing additional insulation and reducing the risk of electrical leakage. Suitable for 1kV-50kV systems.

Automotive Industry

Protecting wiring and sensors in engine bays and exhaust systems — withstanding extreme temperature fluctuations and vibration. Reliable performance in harsh under-hood environments.

Our Mica Tube Range

Explore Our Specialized Mica Tube Products

Choose between natural white muscovite (up to 600°C) and natural gold phlogopite (up to 800°C) — or contact us for synthetic mica tube (up to 1000°C).

◆ Up to 600°C

Muscovite Mica Tube

Natural white muscovite mica tube. Continuous 500°C, intermittent 800°C. Economical choice for home appliances, low-voltage motors, and general electrical insulation.

View Specifications

◆ Up to 800°C

Phlogopite Mica Tube

Natural gold phlogopite mica tube. Continuous 700°C, intermittent 1000°C. For industrial furnaces, motor rotors, HV transformers, and automotive engine bay applications.