PVC pipe w/threaded fittings on both ends, grease.
This is all ya need.
I’ve done some testing with those. Used a cap on one end and the threaded fitting on the other. Put a few cups of flour in it to serve as a water detector. Buried it for a couple weeks in an area slightly above the water table.
The pipes kept the water out but there were traces inside tube. I think from the air trapped in the tube. I plan to use some desiccant, a well lubricated gun, and these bags.
You can use an endcap on one end. Teflon tape on threads, but if buried, assume that even if it doesn’t leak that you will have condensation and package things for a damp environment.