with a little research i found that 45 lb nylon fishing line (it is about .26mm dia.) is almost a perfect
subtitute for the bezel compression ring on my 103 ti ar. i say almost because nothing can truly replace the original item.
it requires a little pressure to fit the nylon line in the bezel groove ( i used a thin plastic rod about 3 mm in dia.) and sort of rolled it into the groove. i first tried to press the bezel on and no luck so, using a tiny razor blade i shaved just a bit off the rounded part of the nylon line while it was in the groove, till it was sort of flat. then i pushed the bezel on, there was a little click and then it popped on. i tried to pop it off with a fair amount of finger pressure and it holds with no problem. it took the razor blade pushed under the lip to make it pop off.
so far success! i still plan on using the correct part, but for now i have
my bezel back on securely and 500 feet of 45 lb fishing line that cost $1.80 in case i have to do it again.