A cap for the male end of a common hose quick connect set. The cap snaps on and stays in place well. I plan to use this on my RV sewer tank flush port.
While optional, using a common 1/2in OD x 3/8in ID x 1/16in thick O'Ring stretched over the center post and pushed to the bottom helps to seal the cap near water/air tight if using the cap for the RV scenario above.
I printed in PETG due to outdoor use and better heat tolerance.
No Supports needed.
It's about an hour long print.
Edit: Replaced 3mf file with original STL. something was not right with the 3MF
The author marked this model as their own original creation.