Dimulit / Pythagoras ceramics are the most economical impervious ceramic material for use as a protection sheath for thermocouples.
They are gas tight and suitable for use to 1400 Deg C.
Rubalit / Alsint / Alumina ceramics have an alumina content of 99.7% and are best suited for use with noble metal thermocouples.
Rubalit sheaths offer a high working temperature to 1700 Deg C and resist chemical attack.
Sizes Available from Stock in 600 & 1000 mm lengths