Ceramic Insulators

Ceramic Insulators

Due to our machining and manufacturing capabilities, Ortech is able to offer a wide variety standard and Custom Products of advanced ceramic insulators. Ortech provide a broad variety of unique engineering properties to improve or extend the performance of your product. When your application demands Extreme temperature stability, Excellent dielectric properties, Hard and wear resistant surfaces or Corrosion resistance.


  • Alumina Oxide
  • Zirconia Oxide
  • Steatite
  • Mullite


  • Dry pressing
  • Extrusion
  • Machining and Grinding
  • Glazing
  • Metallizing
Electrical Insulator

Alumina & Mullite insulators

Standard Alumina Insulators & Mullite insulators Products available in:
1, 2, and 4 Hole Solid Alumina 99.8% ceramic and Mullite ceramic Insulators Tube.

Aluminium oxide Al2O3

Alumina Oxide 99.8%

This is an impervious, recrystallized, pure alumina ceramic containing over 99.8% Al2O3. It has the most superior gas and vacuum tightness and electrical insulating properties at elevated temperatures. It is non-reactive and recommended for use with platinum, as well as tungsten and molybdenum thermocouple alloys. The maximum service temperature is 1900°C (3450°F)


This material is recommended for most Ceramic Insulators and thermocouple applications. It consists of a mullite type ceramic capable of withstanding temperatures up to 1650°C (3000°F).


Please call us at (916) 549-9696 or fill out our quote request from and we will be happy to give you a quote on the product you are looking for.