CeramatestTM 500 is a glass bonded sythetic mica ceramic material designed to meet the exacting demands of technical markets. This material is a versatile and efficient electrical and thermal insulating material. Ceramatest 500 is a fully inorganic material used to bridge the performance gap between high performance plastics and structural ceramics. Ceramatest 500 glass bonded mica ceramic is a simultaneous union under high pressure and temperature of finely powdered electrical quality glass and precisely defined (natural or synthetic) mica. The resulting stone-like, dense ceramic material inherits all of the insulating advantages of both components. CeramatestTM is available in several machinable grades suitable for processing with standard carbide tools and water (or a water based lubricant) and in moldable grades that do not require firing or sintering after molding. As a result, the material can accommodate metal inserts during molding similar to thermoplastics. CeramaTestTM does not burn or outgas. The material is dimensionally stable at elevated temperatures Max. Continuous Use Temperature is 930° F (500° C) CeramatestTM 500 is LIGHT GREY in Color