Product ID : R1237
R1237 Four Hole Round Ceramic Tube Insulator, OD (in)=0.187, ID (in)=0.047
The tubes are constructed of a pure 99% alumina ceramic that has superior gas and vacuum tightness and excellent insulating properties even at elevated temperatures.
The following four hole alumina ceramic tube type insulators are available in six inch lengths.
Source insulators for Extrel mass spectrometers
Stepped insulators made from alumina ceramic.
A superior electrical insulation for Heaters, Elements and Furnaces