Precision Machining of Mica Discs: Best Practices & Tolerances

Mica discs are thin mica sheets of natural mica (muscovite or phlogopite) cut into circular shapes. Valued for their electrical insulation and extreme heat resistance, mica shields protect sight-glasses, heater elements, and electrical components. In high-temperature or high-voltage applications, mica discs act as thermal/ dielectric insulators and

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How Mica Washers Prevent Arcing in High‑Voltage Equipment

Mica washers are insulating discs made from mica sheets or mica rolls, widely used in high-voltage electrical equipment for their exceptional dielectric and thermal properties. They combine ultra-high dielectric strength (about 50–150 kV/mm) with outstanding heat resistance (melting point >1200 °C) and chemical inertness. In effect, th

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Material Properties That Make Mica Parts Flame-Resistant

Muscovite and phlogopite mica are phyllosilicate (layered silicate) minerals prized in high-temperature applications for their thermal insulation and flame-resistant behavior. Mica's characteristic layered crystal structure enables it to split into fragile, flexible sheets, conferring excellent dielectric and insulating properties. These sheets are

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