Question for DIY Canister Light Makers

[Entacmaea]

Hey all, I'm about half-way in on a DIY canister light build, and finishing up the canister, which I made with PVC pipe and coupler fittings glued together (so its walls are about twice as thick as standard SCH 40 white PVC). I didn't want to deal with the latches, and tapping them, and wanted a more streamlined package. so I made a threaded end cap which seals over an o-ring. Just wondering if pressure at depth on the o-ring will compress it to any degree and break the seal? I'm compressing a 3/16" o-ring quite a bit when I screw in the lid, but just wondering people's opinion. The springed latches people use normally on DIY canisters supply continuous pressure, (I think?) so potentially compensate for pressure effects on the exposed o-ring? This will be for recreational diving only, probably never below 125 feet.

Thanks, Peter

 

[raftingtigger]

Post some pictures. I might even 'steal' your ideas for my next canister :blinking:

You also might want to make yourself a pressure pot for testing purposes. I made one and posted at http://www.scubaboard.com/forums/making-your-own-gear/408821-homemade-pressure-pot-under-$40.html not the most elegant one, but it works and would probably fit your canister.