I've disassembled a couple of Parker 51s for cleaning and tuning. On one of these pens, the sac came off even though I didn't really want to take it off. I assume when I heated it up in order to take off the hood, it must've also destroyed whatever was holding this sac in place.
The sac itself is somewhat discolored but it doesn't seem torn or damaged in any way.
Is it okay to reuse this old sac by shellacing it back to the connector when I reassemble the pen? Or is this something that I shouldn't do?