PTFE or LSX rad tails

[Ric2013]

I wouldn't use LSX on rad tales. PTFE or Paste but I don't like paste either.

What do you use then? Hemp needs paste, so you aren't using that.
Rocol thread seal goo?

 

[Harvest Fields]

What do you use then? Hemp needs paste, so you aren't using that.
Rocol thread seal goo?

Just PTFE normally.

 

[Bogart]

Have a tub of Loctite 55 so will use that and considgn the LSX to a bench drawer!

 

[Dave54]

Is there a benefit of using one over the other on radiator tails? Only ask as I have a couple of cast iron rads to fit and manufacturer says LSX over PTFE

Boss white and hemp never leak

 

[Best]

Boss white and hemp never leak

Hemp, or Flax as I call it, is terrible for when you have to remove fittings though! Often locks solid and often difficult removing bits of remaining hemp from threads.
Quite skillful to use hemp also IMO, certainly for anyone who hasn't used it before.
I would say ptfe tape at correct amount to ensure the fittings become a little resistant to fully turning in, plus some paste on it to lubricate the joint and add seal. Makes it easy for a poor bloke coming after us years later to remove a rad tail, or other fitting

 

[Ric2013]

Yes but I have a roll of hemp and there's so little I'm legally allowed to use it for that I need to use it for valve tails or I'll retire before I finish it. I use it with Water Hawk, mind, because I've a tub of that too.