Suggest a non hi-domed acrylic crystal for my Smiths Everest

I've owned a Smiths Everest for a few years now but never liked the sapphire crystal due to the milky ring. I'd much rather have an acrylic crystal--both for clarity and to match the vintage look of the design.

I recently ordered a GS hi-dome from Esslinger (I'm in the USA) and while I like it, and much prefer it to the sapphire crystal, I'd prefer a crystal with a lower profile, and preferably, with a tension ring. The one I currently have installed does not have a tension ring--although I was able to get a very tight fit that at least passes 30m water resistance. I don't plan to use the watch in the water, but I'd like to get as much water resistance as I can. With a sapphire crystal the watch is rated for 100m water resistance.

I've searched online but most sellers don't show an image of crystal side profile. Just a description of the crystal characteristics and the diameter.

Does anyone have advice on how to locate what I'm looking for? To be specific, I'm looking for an acrylic crystal with a lower profile, a stainless/chrome/silver tension ring, with a diameter of 31.6mm.



I'm looking for a profile more like my Longines Conquest Heritage:

Good to know. The crystal I bought is in fact labeled as PHD.


Edit - As I look now Esslinger sells the PK series. That fixes the dome problem, and it's an improvement over my hi-dome. Now if I can find ones with that profile that have a tension ring.

I posed this question on WUS and was told what I'm looking for is the GS TT (Thin-Tite). It's low profile with a tension ring. I'm going to order some PK's as well as they are very inexpensive. Then I know I'll be good to go.