Teledyne FALCON GC Operation And Maintenance Manual page 54

Maintenance & Troubleshooting
14. Gently holding the top of the foam plug with a finger, slowly
pull the plastic plug tool out from between the oven insulation
and foam plug making sure that the foam plug stays snug against
the column end fitting at the bottom.
15. After inserting both column slot plugs, they should look like the
above with the inside and top edges flush with the SPU oven
insulation (red lines).
44 Teledyne Analytical Instruments
Falcon GC