I never thought about looking there for those quad rings.
Poulan used 2 other size rings as well and are probably listed there too.
The problem with McMaster Carr is even though they are mostly inexpensive you have to buy 100 at a time and there shipping is high.
Maybe someone or I will, look em up and buy 100 of all three sizes at once then split them up with guys here. Problem with that is there are too many here that will say, yeah I'm in, then when the time comes they leave you holding the bag. That happened to me on those 361 type fuel line fittings that a great guy offered to manufacture for us and it was a lot more money then this would be.. This is not a shot at anyone here, some of the guys back then are not even around now.
If you want to get 100 of each size, then I will say right now I would split them with you and take half of them and I stand by my word.