Low temprature oil tank thread sealant?

[Luggsey]

Happy New Year all!
New Year new problems.....
I have a new Titan oil tank to connect up replacing a similar un bunded one.
No problem, fitted the original many years ago, I have my boiler on a temporary tank but I need to get the tank fittings on to get it filled.
The 1" fitting in brass needs a sealant on the threads so I have loctite 577 here but with it being so cold I checked the spec and it cures above 5 degrees which it won't bee all week!
There is a curing product that I won't be able to get in time, so, what to use?
Ineed to order something today on Amazon prime to get tomorrow.
I know of an old sealant called 'Stag' but I really need to find out whats going to work in the cold weather?

Also as an aside, the filter/tap fitting has an o ring at the base of the thread socket, should I use thread sealant as well?
Thanks for advice.

Paul.

 

[SJB060685]

Consider PTFE tape and heldite. My need to check specs

 

[Luggsey]

Consider PTFE tape and heldite. My need to check specs

So use both? PTFE with Heldite on top?
I can get Heldite but can't find specs for use in low temperature?
Cheers.

 

[John.g]

I used UNI-RED a few years ago (also in Jan), it didn't mention anything re temperature but said to leave for 24 hrs, which I did, I also used PTFE tapt but I hate these screwed connections on oil tanks.

An old favourite years for everything that required sealing was STAG, anyone remember it??.

 

[John.g]

So use both? PTFE with Heldite on top?
I can get Heldite but can't find specs for use in low temperature?
Cheers.

Hemp or flax is recommended but I just don't trust it, I put some sealant on first, then PTFE then more sealant, the more the merrier but ensure that none of it gets in the pipe internally.

 

[SJB060685]

So use both? PTFE with Heldite on top?
I can get Heldite but can't find specs for use in low temperature?
Cheers.

Yes PTFE tape with Heldite on top is what a lot of people use. Honestly can't comment on the temperature part.

Never heard of Stag, sure the old man would of when he was alive though.

 

[SJB060685]

Yes its imperative nothing obstructs thr oil flow.

 

[Gasmk1]

Cromwell Tools - Experts in Hand Tools, Power Tools and PPE - https://www.cromwell.co.uk/shop/adhesives-and-sealants/pipe-sealants/jointing-compounds/f/7988 stag used to be red And set rock hard used to have to heat joints when taking apart, this one says down to -55

 

[ShaunCorbs]

Stag is good it’s got a weird smell and doesn’t come off easy but sorts most things out don’t know if it’s oil rated tho

 

[SimonG]

Ptfe and heldite.

 

[apcdave]

Happy New Year all!
New Year new problems.***.
I have a new Titan oil tank to connect up replacing a similar un bunded one.
No problem, fitted the original many years ago, I have my boiler on a temporary tank but I need to get the tank fittings on to get it filled.
The 1" fitting in brass needs a sealant on the threads so I have loctite 577 here but with it being so cold I checked the spec and it cures above 5 degrees which it won't bee all week!
There is a curing product that I won't be able to get in time, so, what to use?
Ineed to order something today on Amazon prime to get tomorrow.
I know of an old sealant called 'Stag' but I really need to find out whats going to work in the cold weather?

Also as an aside, the filter/tap fitting has an o ring at the base of the thread socket, should I use thread sealant as well?
Thanks for advice.

Paul.

ptfe plus heldite...never had a leak

 

[The Ancient One]

Agree - PTFE and Heldite - use it on both taper and parallel threads. Secret is to put the fittings together first to see how slack or tight they are then decide on the number of turns. You can't get it too wrong if you use plenty tape even the rope if the joints are really slack. If you have too much the joint will bind up before there is enough thread taken up. By the time you've done five thousand fittings you should have it off pat! Lol.

 

[Luggsey]

I used a Loctite 577 and the activator in the end, no leaks!
Thanks all.