loctite 51609 on npt fittings

[Swagelok]

Has anyone used this heavy duty anti seize on npt's. We are having a big issue with getting our fittings to seal using this lubricant. hoping to get any tips on eliminating the leaks during assembly so we don't have to go back and torque them down more or have to remove the fitting all together.

 

[MikeHalloran]

It's not a sealant; why would you expect it to seal?

It's probably the wrong Loctite for what you are doing. Ask Henkel to send someone along to look at your application and make a specific recommendation.



Mike Halloran
Pembroke Pines, FL, USA

 

[Swagelok]

I should have said in the original post that this anti seize is mandated and spec'ed by the customer and we cannot use anything else for sealing or lubricating. I know and agree that this is not the right stuff to be using, just wanted to search out to see if anyone else has come into this issue and had found a solution.

Thanks

 

[DRWeig]

Hmmmm.... 51609 is a lubricant, not a sealant?

Best to you,

Goober Dave

Haven't see the forum policies? Do so now: Forum Policies

 

[MikeHalloran]

When the problem is that the customer has mandated and specified the completely wrong stuff, there may not be a solution other than repeated assembly, test and disassembly.

It MIGHT be possible to social-engineer your way into the customer's staff and find out which person is responsible for the unfortunate specification, get the backstory, and figure out how to solve the problem that started your misery. ... but it requires a delicate touch, and may backfire, badly, anyway.



Mike Halloran
Pembroke Pines, FL, USA

 

[Swagelok]

thanks for the advice, Mike, That will most likely have to be our next steps in solving the issue.

 

[Artisi]

Well just maybe the customer has decided that they want you to use a thread lubricant for ease of disassembly and that your fittings should seal without having to use a thread sealant.


It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)