Yes the clear PVC is great for the tube but to make an easily removable end caps is the fun part without resorting to the internal O ring desighne that is more prone to leaking.
Before I found the casings I developed and are usuing today, I had also developed an easy way to open and close comon slip on PVC end caps that dont employ O rings.That was a problem as for watertight sealing an O ring was manditory to be integrated into the casings desighne.
Nothing was out there that would work,so I had to develop something that would.
Here is what I came up with.
available in all the comon pipe sizes and lengths one could want.
PM me if you would like one taylord to your needs.
Drawbacks are the parts cost more in the larger sizes and there is no random acsses as is in the casing I use now.
I love the bayonet system that employs a special seal and easily expandable with random acsses. Unfortunatly it wont fit small subs.4 inch diamiter.