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Product ID : R21
R21 Two Hole Ceramic Tube Insulator, OD (in)=0.25, ID (in)=0.062
Description
More details on associated web pages:
Two Hole Round Ceramic Tube Insulators
The following two hole alumina ceramic tube type insulators are available in six inch lengths.Ceramic Tubes
(Catalog A58)

The following four hole alumina ceramic tube type insulators are available in six inch lengths.

The following two hole alumina ceramic tube type insulators are available in six inch lengths.

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 Nichrome Wire, Non Magnetic Ribbon for mass spectrometer heaters here. Choose from varying thickness, Nichrome filament wire sold by the foot.