Silicon carbide tube is an innovative ceramic material with excellent corrosion resistance, thermal stability, and flexural strength properties. Furthermore, its Mohs hardness rating of nine puts it nearer diamond.
Oxide bonded SiC protection tubes are less porous than their nitride-bonded counterparts and less dense than carbon-bonded versions, providing sufficient protection from direct flame impingement for primary thermocouple tubes containing mullite or alumina material. These tubes are used to guard primary thermocouples from direct flame exposure.