... , Bearing is made of Silicon Nitride Ceramic.Item: 6803 Ball Bearing Type: Full Ceramic Silicon Nitride Bearing Inner/outer races: ... 1472 Degrees F Non-Magnetic Non-Conductive Application: Full ceramic bearing could be used in following industries: chemical, semi ... , electronic, medical, vacuum, refining, insulation, etc. Note: Full ceramic bearing is not suitable for heavy loading, impact loading and ...