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Graphite heater
Ceramic ring
Ceramic ring 1
Ceramic ring33 11.5
Ceramic ring33 21.5
Ceramic ring40 27.5
Leybold electronic gun head
Ceramic ring47 32.5
Electron gun ceramic block
Ceramic ring88 2.9(10011968)
Electron gun ceramic cup
Alumina insert40 38.5 0.5
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