Mica-glass composition is mechanically & electrically robust, resistant to thermal shocks. Thanks to its know-how of overmolding mica-glass on metal for decades, Saint Gobain Advanced Ceramic Composites (formerly Saint-Gobain Quartz) would be pleased to support your need for making electrically insulated metal parts, metal enclosures in mica-glass or complex shapes of stand-alone mica-glass composite parts.