The natural structure stability feature of mica makes it perfect with outstanding features of low leakage, great stability under increasing temperature, high insular strength, low rate of solar impurities and reasonable admittance factor. For These outstanding features, mica is most suited for use in thermionic valve bridges, cathode ray tube assemblies, condenser plates, domestic elements, stove plates and washers built up to any thickness. In almost all these applications, mica is die-punched and used as such, or with a coating.