Prototype Dry Pressed and Machined Hafnium Oxide Shapes

We are proud of our Hafnium Oxide extrusions and the amazing technical applications that our customers find for them. Extruded tubes are useful for temperature measurement applications but there may be other problems that can be solved with this unique material. The...

New 4 Hole High Density MgO (HRM)!

Are you looking for some High Density MgO for your application? Are you needing more than 1-hole in your High Density MgO? Do you like Big Sticks? If you answered yes to either of these questions, then you’ve come to the right place!!! Tateho Ozark (TOTC) is...

Tiny HfO2 extruded insulators while supplies last

Dateline October 2015 -TOTC has recently produced a limited supply of 0.026” OD x 0.006” ID x double bore Hafnium Oxide extrusions! TOTC has been refining and improving the limits of Hafnium Oxide extrusions since beginning the product line in 1989. One of the...

And sometimes Y… We can now offer Yttria!

Dateline: October 2015 – When you troll the list of refractory oxides, you often encounter Calcia, Thoria, and Yttria among the most stable oxides in nature. But, CaO is notoriously hygroscopic and weak. Thoria is slightly radioactive, but not in a cool way that...

Production Capacity

Crucibles from 99.4% MgO and 99.6% Al2O3 Hafnium Oxide extrusions for ultra-high temperature measurement. Extrusions for Thermocouples: Mineral Insulated Cable and Heaters Other Ceramic products include pressed shapes for custom electrical, refractory, and corrosive...