Product ID : R1206
R1206 Single Hole Round Ceramic Insulator, OD (in)=0.219, ID (in)=0.109
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.
Buy tungsten wire, ribbon for mass spectrometer heaters here. Choose from varying thickness, Tungsten filament wire sold by the foot.
Are available in both quartz and ceramic.