Apollo,

You are right, I have no experience with "Plumbing Goop" brand goop... maybe I should get some.

All I was saying is that HDPE is one of the most difficult materials in the world to bond to. I've never come across a product that can make a reliable structural bond to it... but I've never tried "Plumbing Goop".

My point really is that gooping everything up might sound easy as a solution, but it is really not necessary if you simply make a good seal in the first place. Getting good seals can be tricky sometimes, but they are not rocket science. A job well done is DONE done, and asking goop to play a structural role (goop/clauk/grease/gasket maker in general, not your special stuff) has always come back to haunt me in the end.

Bill