Gridfinity Screw Top Jars with label frame

This is a little 4-high storage jar that uses an M33 screw plug.   

The top of the lid is tapered at a slightly wider angle than the rim it goes in, to concentrate the force and give a tight seal, but they're probably not waterproof.

Like most jars, it's possible to screw these too tightly and make it hard to undo, and I haven't quite figured out a way to stop that, aside from putting a bit of wax on the sealing surface rim, or just not over-tightening.

There's also a slot at the front for a label.  Cut it at just slightly bigger than 16x32mm, tuck it under the lip of the frame, and it will stay securely even without glue.  

Could probably print an 0.2mm or so label with a multi-material printer too.

There's also an untested 6-high version.