Liquid PTFE

[JonasX]

Does this do what they say on the tin? Is is best to use the PTFE tape and add this to the threads? I find that PTFE tape never 100% makes a seal on all threads.

On a parallel to parallel thread is tape the best rather than Liquid PTFE. Or a combination of the two?

I would like the views of those who have used Liquid PTFE.

than you.

 

[JohnD]

I find that PTFE tape never 100% makes a seal on all threads. .

are you using it on tapered threaded joints such as radiator plugs, or on e.g. the threads of compression joints?

 

[Agile]

I dont think that I have seen this product. Who makes it and how much does it cost?

Having gained experience of using PTFE tape I dont see any need to use anything else but its always intresting to know about other products.

Tony

 

[leakydave]

Loctite 55 gets my vote every time these days.

 

[seco services]

Can't fault liquid ptfe.
It's made by talon, i useally get it from BES.
I've used it on concealed shower fittings, rad tails etc.

 

[Charnwood]

I dont think that I have seen this product. Who makes it and how much does it cost?

Laco Slic-Tite, 120ml roughly a tenner, 240ml around 18 quid, 475ml 28 quid. I say 'roughly, depends how greedy/generous your local merchant is.

 

[Dan Robinson]

Loctite 55 is great. I Often use the Talon stuff when I know it will have time to cure....

 

[Agile]

Loctite 55 is great. I Often use the Talon stuff when I know it will have time to cure....[/quote]

OK Dan can you spill the beans? Or in your case the edamame ?

Why does it need to cure?

How long does it take?

Does it need oxygen or water moisture to cure?

Tony

 

[Dan Robinson]

Anaerobic - goes hard without oxygen hence it dries/seals/stops you undoing the bugger after a while.

Not too interested in the chemistry though - just like the fact it works and works well.

 

[JonasX]

Anaerobic - goes hard without oxygen hence it dries/seals/stops you undoing the b*****r after a while.

Not too interested in the chemistry though - just like the fact it works and works well.

Thanks Dan. Do you use the tape and the liquid PTFE together?

 

[Dan Robinson]

No - one or the other, but I only use the PTFE tape when I need to make up a gland or repair an over crunched olive.

 

[JohnD]

I find that PTFE tape never 100% makes a seal on all threads. .

are you using it on tapered threaded joints such as radiator plugs, or on e.g. the threads of compression joints?

 

[JonasX]

I find that PTFE tape never 100% makes a seal on all threads. .

are you using it on tapered threaded joints such as radiator plugs, or on e.g. the threads of compression joints?

I never used it on radiator plugs as they come with a rubber olive. On the valves? yes.

I never use the tape on compression joints. I know only paste or liquid is needed on these.

 

[JohnD]

where do you put it on the valves?

I don't understand what threads you are putting it on.

PTFE tape is fine to use on olives as it prevents them weeping, even if a poor fit/poor alloy/slightly mishapen/previously used

 

[JonasX]

I put the PTFE tape on the rad valves 1/2" thread. I read that PTFE is not needed for compression, only paste or liquid. So far I have done this and had no leaks. I only use Conex if I can. The cheaper fittings I avoid. Occasionally I have come across a parallel male and female thread that need screwing together. I have always used lots of PTFE tape to pack it out and some paste or liquid in he threads. I would assume using liquid PTFE in the threads would add to the seal.

I once used Fermox FSX, which to me was only silicon. I stopped using it, as it dried hard and in lumps inside fittings like silicon causing a restriction. Horrid stuff. I thought it was a rip-off as a large tube of silicon is cheaper. It looked the same to me. Hence why I want to go to liquid PTFE. I want a proper seal and no problems after.