O-Rings are available in five different materials from Scientific Instrument Services.

Tantalum Wire and Ribbon is corrosion resistant and has good thermal conductivity. Some of its uses is in the manufacture of heating elements, vacuum tubes and other high temperature parts

the VG direct probe ceramic probe tip which holds the sample vials in place on the end of the probe.

Granville-Phillips 340 Vacuum Gauge Controller (VGC) measures pressure from less than 1 x 10-9 Torr to atmosphere, utilizing an ionization gauge and two Convectron gauges.

The Granville Philips Convectron Gauge tube used on the 5971 and 5972 mass spectrometers is available from S.I.S. This is a direct replacement for the HP original and screws into the fitting shown above.