Underwater camera housing LCD window sealing system

[Splint]

Hi,

I am in the process of designing an underwater camera housing and have noticed a mounting system for the LCD/viewfinder window which appears to consist of a u-seal alone to secure the acrylic window in place (no retaining screws or other sandwiching method as used in a simple o-ring application).

I've been making inquiries to find a company who can supply seals to mount the LCD/viewfinder window as seen in the following images of an underwater camera housing:

https://static1.squarespace.com/sta...02a3360c42406f22eb/1464034568202/DSC_9534.jpg

http://www.uwphotographyguide.com/sites/default/files/u2168/nauticam-na-d500-housing-inside2.jpg

I'm also trying to source a company who can supply acrylic windows such as in this application which are treated with an anti-reflective, scratch resistant coating.

Any leads would be greatly appreciated.

Thanks
Splint