Magnesia has superior chemical stability, electric insulation, and heat conductivity and is used as heat insulating filler.

Type	Use temperature
High-temperature type	Use temperature: 800°C or less
Low-temperature type	Use temperature: 400°C or less (water repellent type)

Features

• Superior electric insulation and good heat conductivity.
• High resistant temperature (fusing point: 2800°C)

Chemical expression

MgO (formal designation: magnesium oxide)

Application example

Filler for sheath heaters