aphamaniv,
Sorry about not being so responsive but I don't have a way to post pics.
I have a couple of the washers so maybe I can help. I don't believe any of the EXe come with the washer because it's something you have to request from SF.
Physically, it's just big enough to fit snugly over the bezel threads. It's also paper thin and black in color.
To put it on, remove the bezel, carefully take the o-ring off, slip on the washer and then reassemble.
On a side note, the washer fits and works well with my E1e + KL1 but doesn't allow the light to function when used on my E2e! Strange.
Since your ring doesn't squish you might not need the washer, although the clip slot is a vulnerability. Having a tactical SF washer takes care of the problem.