This retainer nut secures the cathode assembly into the sensor body. The mechanical seals on the Broadley-James electrode keep this retainer nut clean and dry. It is reusable and unlikely to need replacing unless accidentally lost during rebuild.
Cathode Retainer Nut
Used on the Classic OxyProbe 19 mm and 25 mm dissolved oxygen sensors.
| Part Number | Description |
| AM-9210 | Cathode Retainer Nut |