Product ID : R50
R50 Single Hole Round Ceramic Insulator, OD (in)=0.218, ID (in)=0.156
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 two hole alumina ceramic tube type insulators are available in six inch lengths.
Replacement insulators for your VG mass spec
A wide variety of alumina ceramic washers.