Pipe Dope or Teflan tape?

[RowCropRenegade]

Merry Christmas and Happy Holidays to the hearth community!

I've never done any hydronic heating piping, until tomorrow. In all my chemical handling equipment I use teflon. Mainly because it's clean, easily stored and needs no set up time. I've had teflon leak, but nothing a re wrapped and cleaned up thread didn't solve. We are talking lines as big as 3 inch to small as 1/2, mainly plastic stuff. PSI ranging from 30 to 120.

I won't be dealing with high PSI tomorrow but 200 degree water is the unknown variable.

Going to pick a can of Rectorseal # 5 so I have a comparison. IMHO, combining the two sealants sound like a last resort fix. But what do I know? The teflan they reccomended me is thicker than the reg white teflan and its blue. Minimum 3 wraps.

Thanks for the tips!

 

[Gooserider]

Oh, and one other thing that I forgot to mention earlier - per the Rectorseal can instructions, I always try to put 3 turns on the joint past "finger tight"... In practice, because of needing to line things up, this can actually be something closer to between 2.5 and 3.5 turns, but I always go for at least 2.5 - and if I'm not having to work at getting the last 1/2 to 3/4 of a turn, I go for an extra...

Gooserider

 

[DannMarr]

I agree with fyrewerks and webby, I never mix. Tape or paste work fine as long as you use it properly for the right application.