Yes I use the spring type (as linked)
I drilled the 3/8 hole in the Bucket but didn't tap it. Not enough material. I also used o rings as you described. No leaking issues for me
More proof great minds think alike!!!
I thought those were the spring ones by the yellow plunger, I could not tell for sure. The only thing I cannot use them on is my chicks. they just cannot push the springs down. I wish they had some for them. I did order some pop bottle waterers to try on chicks though.