1. Precision-Machined Mica Sheets: The Ultimate High-Temperature Insulation Solution. Our mica sheets are high-performance insulation materials composed of 90% premium-quality mica minerals and 10% high-grade silicone resin. Engineered for extreme environments, these sheets offer exceptional thermal and electrical insulation properties, serving as an ideal asbestos-free alternative for modern industrial applications.

• Heat resistance: 500°C to 1000°C

• Dielectric strength: 15KV/mm

• Customized services: CNC machining, stamping, laser cutting and 3D molding.

2. Main advantages

Why choose our mica-processed parts?

Excellent thermal insulation performance: It maintains excellent dielectric properties even at sustained high temperatures (up to 1000°C).

Mechanical strength: Rigid mica sheets have high bending strength, while flexible mica sheets have excellent tensile strength and do not delaminate during bending.

Environmentally friendly and safe: 100% asbestos-free. Minimal smoke and odor during heating, ensuring a safer working environment.

Chemical stability: Excellent resistance to acids, alkalis and oils.

3. Product Categories

A. Rigid mica sheet
It is an ideal material for heating brackets and gaskets in industrial furnaces, microwave ovens, and electric irons.

Features: High hardness and excellent bending strength.

Applications: heating element supports, gaskets, and structural insulators.

Performance parameters

• Performance Parameter

• Item		Unit	R-5660-H1	R-5660-H3	Test Procedure
  Mica Paper			Muscovite	Phlogopite
  Mica Content		%	≈92	≈92	IEC 60371-2
  Bond Content		%	≈8	≈8	IEC 60371-2
  Density		g/cm3	1.8-2.45	1.8-2.45	IEC 60371-2
  Heat Resistance	Continuous Services	℃	500	700
  	Intermittent Services	℃	800	1000
  Heat Loss at 500℃		%	﹤1	﹤1	IEC 60371-2
  Heat Loss at 700℃		%	﹤2	﹤2	IEC 60371-2
  Flexural Strength		MPa	﹥120	﹥120	GB/T 5019.2
  Water Absorption		%	﹤1	﹤1	GB/T 5019.2
  Dielectric Strength		kV/mm	﹥20	﹥20	IEC 60243-1
  Insulation Resistance at 23℃		Ω·cm	1017	1017	IEC 60243-1
  Insulation Resistance at 500℃		Ω·cm	1012	1012	IEC 60243-1
  Flame Resistance			UL94 V-0	UL94 V-0	UL94
  Smoking test		s	＜4	＜4	in house

B. Flexible mica sheet
It has high flexibility and elasticity, and can be rolled into various shapes without breaking.。

• • Features: Smooth surface, excellent coverage.

  • Applications: Hair dryers, heat guns, transformers, and bending insulation wrapping materials。

  • Performance parametersPerformance parameters

C. Extra-thick mica sheets

Heavy-duty insulating materials suitable for high-voltage environments.

• • Application areas: chemical machinery, metallurgy, high-speed locomotives.

  • Performance Parameter

  • Item		Unit	R-5660-S1	R-5660-S3	Test Procedure
    Mica Paper			Muscovite	Phlogopite
    Mica Content		%	≈90	≈90	IEC 60371-2
    Bond Content		%	≈10	≈10	IEC 60371-2
    Density		g/cm3	≈1.9	≈1.9	IEC 60371-2
    Heat Resistance	Continuous Services	℃	500	700
    	Intermittent Services	℃	800	1000
    Heat Loss at 500℃		%	﹤1	﹤1	IEC 60371-2
    Heat Loss at 700℃		%	﹤2	﹤2	IEC 60371-2
    Water Absorption		%	﹤1	﹤1	GB/T 5019.2
    Dielectric Strength		kV/mm	﹥20	﹥20	IEC 60243-1
    Flame Resistance			UL94 V-0	UL94 V-0	UL94

4. CNC machining capability

Wuxi Shangjue Technology Co., Ltd.: Your partner for precision mica components. We don’t just sell mica sheets; we provide complete solutions. We use advanced CNC lathes, laser engraving machines, and 3D molding machines to process high-precision mica parts according to your CAD drawings.

Our machining services include:

• Processing methods: Punching (<2mm), sawing, milling, turning, drilling, grinding.

• Custom shapes: mica gaskets, flanges, mica tubes, box-type insulators, clamps, and complex 3D shapes (grooved, I-beam, angle sections).

• 

• 5. Industrial applications

  Our custom mica components are trusted across various industries:

  • Home appliances: toaster, hair dryer, microwave oven.

  • Heavy industry: metallurgical and chemical equipment and smelting furnaces.

  • Transportation: Thermal insulation materials for high-speed railways and automobiles.

  • Electronic components: test fixtures and high-voltage circuit components.

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  7. Need a customized quote for your mica project? SJ Tech has years of experience in high-precision mica processing. We offer design collaborations and tailored, high-value solutions to meet your needs.

  📩Send your drawings to our email address now to receive free technical consultation and a quick quote!WhatsApp：+8615950409403 EMAIL：info@sjcncinsulation.com