AFAIK none has ever been posted. In fact, I recall guys failing to get them from the maker (the only source since it seems to be a custom part).
This is, in fact, the problem that led to the search for the o-ring mod. If we could simply buy new (tighter) seals and install them instead we'd be Jake and not need the #113 ring.
The maker doesn't support guys taking the heaters apart, and IMO rightly so.
You're welcome to use whatever routine you want of course, but if you really want to fly your OCD flag here I'd suggest you rethink it. Specifically, compulsively charging 'to the very top' is probably the worst thing you can do to the battery. Seriously, look it up. You get maybe 300 cycles. Back it off .1 Volt or so and you
double the lifespan of the battery. Your buddy has better practice here actually. It's not good to fully drain them either, but really not as bad.....and Solo keeps you from really hammering them with the cutoff.
Check out:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Especially around chart 4, interesting stuff.
In honor of this, many Military applications limit charging to 4.0 or even a bit under to limit/remove having batteries fail in the field. They live with lower operating time per charge.
IMO if you want to get maximum useful life out of your Solo battery always check battery level when you start a session. It's OK to finish a session that shows no battery left (current production, early 'meters' were different) since there's a fair size safety margin there, but charge after that (that is never go more than one session past 'no battery left' on the meter). Then, when you charge go to the top LED lit (changes between 4.0 and 4.1 Volts per cell) but before the charging light stops flashing (4.2 Volts) stop the charge. Don't let it go solid. This will, 'by the books' take you from 300 cycles to over 1000.
Your call, of course, but that's my advice if you want other OCD guys to stand aside and tip their hats as you walk by.
Interesting idea, but I'm not so sure they first designed in an industry standard o-ring then changed their mind without changing the cover. Rather, I think the seal was a key design point from the start. I don't think it's an accident the way it works. I think it was a custom part from the very start, like (nearly) everything else in the heater is. Not, I guess, that that really matters?
What I do advise against is average guys messing with those four screws. Many guys have broken the heater leads this way. I'm one of them. You can't even see the danger from the top, let alone deal with it if you don't fully understand the assembly. The clips hold the two halves together until the screws are in (so it's a secure sub assembly), once the screws are in there's no need for the clips (indeed probably half the ones I've seen are unlatched and doing just fine). However, the four frail wires you can't see coming out the bottom of the center section solder to a PCB attached elsewhere. The four screws are keeping the wires safe by keeping the heater body firmly down on the four support posts, remove the screws, the heater moves (and the PCB does not) and you've got a dead Solo that IMO should not be covered under warranty (tampering by user).
Adding the ring on top (and removing it any time) without disturbing the internals further violate the warranty, removing those screws does even if you 'get away with it'. My advice is to use the ring as the rest of us are and not mess with those screws unless you really know what you're doing and can repair it yourself if you screw up like I did?
Regards to all,
OF