... muscovite flexible plate is 550°C, while that of phlogopite mica plates is 850°C; which is a new style electric ... fitting to valve electrode, insulation brace and insulation gasket, etc. mica plates is mostly used with industry electric cooker, copycat, baker ... - 85, IEC371 Note: Thcikness≤0.2mm, Dielectric strength will discuss. mica rigid sheet