MICASHEET™ Mica Tubes
At MICASHEET™, we develop precision-engineered mica tubes that combine premium muscovite or phlogopite mica paper with silicone resin. Our advanced winding and heat-treatment techniques produce rigid, smooth tubes with excellent thermal stability and electrical insulation properties.
Mica Tubes


MICASHEET™ mica tubes are crafted using fully automated winding equipment paired with real-time electronic measurement systems, ensuring unmatched precision in every unit. Each tube features a polished surface, precise roundness, and dimensional accuracy within ±0.2 mm—guaranteeing a perfect fit in demanding applications.
We also offer ultra-thin wall options as thin as 0.3 mm, ideal for tight-space installations and high-precision insulation needs.
Characters of Mica Tubes
- Our tubes utilize a composition of ~90% mica paper and ~10% silicone binder, optimized for heat tolerance. MICASHEET™ muscovite tubes handle continuous use up to 500 °C, while phlogopite grades reach 700 °C, and endure short-term peaks to 1000 °C
- These mica tubes maintain excellent dielectric strength, satisfying or surpassing industry insulation standards even under prolonged thermal exposure.

Specification of Mica Tubes
- MICASHEET™ tubes lengths from 10 mm to 1000 mm, with inner diameters ranging from 6 mm to 460 mm, and outer diameters up to approximately 480 mm.
- Beyond standard round tubes, we craft square, oval, rectangular, or custom cross-sections to match application-specific design requirements.
Applications & Industry Uses
MICASHEET™ mica tubes support critical insulation needs in:
- High-temperature furnace components (e.g. electrode arms, lead sleeves) in steel, induction, or arc furnace systems
- Electrical motors, transformers, and commutators—serving as internal insulation for coils and rotating components
- Heating devices, including heat guns, ovens, and high-voltage appliances
- Battery and power electronics modules, where precise thermal barriers enhance efficiency and safety
Technical Specifications (Typical Ranges)
| Feature | MICASHEET™ Specification |
|---|---|
| Composition | ~90% mica paper + ~10% silicone binder |
| Length | 10–1,000 mm |
| Inner Diameter | 6–460 mm (outer up to ~480 mm) |
| Minimum Wall Thickness | 0.3 mm |
| Dimensional Tolerance | ± 0.2 mm |
| Temperature Rating | Continuous: 500 °C (muscovite), 700 °C (phlogopite); Peak: up to 1,000 °C |
| Dielectric Strength | Conforms to NEMA/IEC industrial standards |
| Shapes Available | Round, square, oval, rectangular, custom |
✅ Why Choose MICASHEET™ Mica Tubes?
- Precision Engineering: Tight tolerances, ultra-thin walls, and flawless surface quality facilitate seamless integration into high-precision equipment.
- Thermal & Electrical Excellence: High heat resistance and reliable dielectric properties meet demanding insulation challenges.
- Shape Versatility: MICASHEET™ accommodates custom geometries beyond simple round tubes.
- Mechanical Durability: Non-brittle and vibration-resistant—ideal for dynamic industrial environments.
- Quality Assurance: Each production lot includes verification for dimensions, strength, and insulation performance.
Ready to Specify? MICASHEET™ Supports Your Design
Provide your drawings or outline your dimensional and electrical requirements. Our engineers will advise the ideal mica grade and binder setup. MICASHEET™ offers rapid prototyping, custom fabrication, and post-sale technical support to match your project needs.
Contact MICASHEET™ today for a sample or tailored quote.