Leybold Flat Washer Seals for Helium Leak Detector Mass Spectrometer Phoenix L300i.
Leybold Size 41.5 X 55mm - P/N 20099135 (pack of 20)
This is a package of 20 flat washers for the Leybold Phoenix L300i Helium Leak Detector Mass Spectrometer, for locations of the washers See graphic to the left, highlighted in yellow.