Okay, Peggie, what's the straight poop?

[Bob Todd]

I'm installing my new holding tank and installing new tank fittings as well. On the tank label it clearly states not to use teflon on the fitting threads. I certainly would like to use something on the threads.We got into a discussion at the club. Some people say to use silicon, some say thread compound (either Teflon or non-Teflon), Life Caulk, 4200, etc.In other words, as many different answers as the number of people asked.Now, I know that odors can and will permeate through silicon and thread compound. Life Caulk or 4200...beats me.What (if anything) is best for the task?Cheers,BobNonsuch 30C #77Lazybones

 

[Peggie Hall HeadMistress]

Who's the tank mfr?

'Cuz Teflon tape is the ONLY think to use on tank fittings--but then, only if you need it...NOT silcone, 4200, "pipe dope" or any other sealant--only Teflon tape. I can't imagine why any tank mfr would instruct not to use it. Are you sure you read it right? That it doesn't say "don't use anything BUT...???"Be careful not to overtighten the fittings...tank fittings are NPT standard, which are slightly tapered...overtightened can put stress on the female "collar" that will cause it to crack. Just one full turn past hand-tight, plus enough more to aim a 90 where it needs to go.

 

[Bob Todd]

Tank is the one offered by...

...the INA. It does say two turns past hand tight on the label and it also specifically states,"Do not use Teflon tape."Cheers,Bob

 

[Peggie Hall HeadMistress]

That would be a Ronco Plastics tank...

And while Ronco makes TOP quality tanks, but they're little shaky on how to plumb 'em....till just a couple of a years ago the "sanitation" hose shown in their catalog was corrugated hose installed with cuffs. At least 90% of the tanks we sold for more than 10 years were Ronco tanks (in fact, I set up the deal with INA and Ronco), and Teflon tape was used to install fittings in almost all of 'em. So you can safely ignore the instruction not to use Teflon tape on the fittings. I can't imagine where they got the idea it shouldn't be used.