... is this the seal that people are talking about replacing in the older thread that you linked to?
... Kent H referred to this as a "packing gland" ... Same thing as what is in the picture?
... How do you get it out without completely destroying it? It might be worth a shot on mine, since IIRC they are leaking around the shaft seal.
If I have to buy replacements, does anyone make a quality set that look / perform just like the originals? USA made would be a plus. I hate putting anything non-original back on this particular car, even if they are not easily visible.
that is a 'Packing' seal.
They are very common and have been used for many-many-many years on all sorts of hydraulic, air and steam applications to 'pack' the stuffing area around a shaft to prevent leaks.
Most common location in your home would be the Stop-Cocks (no more Doctor jokes please
) or spigots under the sink or outside your house.
(You'll probably find a quite a few still around your house or work if you start to check water or steam valves and other common devices
I vary rarely can get one out of the packing pocket without destroying it ...
I keep a pretty good supply of the string/rope packing around as I commonly need it when working on the home, the boats (which reminds me, I need to replace it this year in the MasterCraft
) trucks/tractors and other places to replace worn or leaking packings.
I keep both the Graphite (older) and the Teflon (newer) type around. You can find this stuff in packages at just about every hardware or plumbing stores in the world - I've even bought it in Europe and Asia ...
It commonly comes in smaller packages at places like Ace and Home Depot/Lowes - but you can find larger spools of it at plumbing supply houses.
Packages will often look like these -
As far as the two (2) type and their 'best' use ...
I tend to stick with the Graphite for uses where a shaft/output rotates in the packing and go with Teflon for uses where the shaft slides through the packing - think of stuff like a water valve stem, propeller shaft or water pump shaft as the common 'rotating' uses and hydraulic piston shafts as the common 'sliding' use ...
O-rings may be an option for some - IF, you can find one that can stretch over the top mount and still be viable once installed.
I did once find some fantastic 'Viton' type O-rings I used to do a couple of replacements on some 'vert piston shafts - but they were hard to get over the upper pin-mount head on the shaft and, since the vehicles are long-gone, I can't really tell you how lasting the repair was ...
Hope this helps.