Welcome to Crystex Composites, LLC.

Crystex Composites is the manufacturer and distributor of Mykroy/Mycalex® glass bonded mica ceramic materials and Mycalex Insulators®.

Please click here for the history of Crystex Composites and Mykroy/Mycalex® glass bonded mica ceramics.

Mykroy/Mycalex® is the trade name for the glass bonded mica ceramic material produced by Crystex Composites LLC.  Since 1919, Mykroy/Mycalex® remains the most versatile and efficient electrical and thermal insulating material produced to meet the exacting demands of technical markets.  Mykroy/Mycalex® is the only fully inorganic material to bridge the performance gap between high performance plastics and structural ceramics.  Mykroy/Mycalex® glass bonded mica ceramic is manufactured by fusing together at high temperature and under high pressure, 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. 

Mykroy/Mycalex® is available in 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.  Mykroy/Mycalex® does not burn or outgas.  The material is dimensionally stable at temperatures ranging from -240°C to 800°C.

Crystex Composites products and services include:

  • Machinable grades of glass bonded mica in flat and round stock
  • Custom molded parts
  • Custom fabricated parts
  • Mycalex Insulators® (off the shelf standoff insulating products)
  • Synthetic Mica
  • Mold design and tool making

Mycalex Insulators of England

Our dynamic team is ready to serve your needs.  Please click here to meet our team.