Useful to keep opened cartridges (silicon, construction adhesive..).
You'll need an o-ring (inner diameter: 20mm, diameter 3.55mm) to ensure a tight fit. I found mine in a parkside o-rings box.
I printed my caps in PETG (0.2 layer height) with the hole facing upward.
The file “Cap Plastic Euro thread.stl” is for standard plastic sealant cartridges, and the file “Cap metal M15x1.5 thread.stl” is for SIKA metal cartridges.
The author marked this model as their own original creation.