The Pilot 9811(often listed with the prefix “P” or “PN” as P69811) refers to the Pilot CON-B Squeeze Converter
. This is a simple, flexible rubber bladder (aerometric style) converter used to fill fountain pens from bottled ink.
Product Details
- Mechanism: Squeeze/Press (aerometric). You submerge the nib in ink and squeeze the metal frame to compress the internal rubber sac, which draws ink as it expands.
- Capacity: Approximately 0.62ml to 0.9ml.
- Compatibility: Fits most current Pilot and Namiki cartridge/converter fountain pens. It is notably the standard converter included with the Pilot Metropolitan, Parallel, and Plumix series



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