Hydraulic hoses and equipment can make a mess if not capped off when unhooked. I picked up a used porta-power set which did not have caps and plugs for all the fittings, so I created some at 13/16" x 20 TPI. I realize there are some porta-power units with other threads. I also know there are some fittings with the 13/16 x 20 TPI which are shorter in length. These caps and plugs work on the fittings I have.
Using PLA I was able to print with the nut side down and no supports. Strength isn't an issue so I used 15% infill. If the threads are tight, try printing the cap at 101% or 102% and the plug at 99% or 98%.
The author marked this model as their own original creation.