Loctite on C1D1 Conduit?

[schwarz633]

I'm rewiring a machine where the OEM has used red Loctite on all of the C1D1 threaded conduit connections. I've had to use a torch to disassemble every threaded joint. Is this normal?

 

[rbalex]

No. In fact, it's generally a bad idea to do anything more than required in section 500.8(E). While it isn't specifically prohibited, doping the threads with an acrylic can mess with both the electrical bonding and the "natural" explosion pressure relief afforded by threads.

 

[kwired]

I agree with what Bob said.

Assuming "Locktite" was used to lock threads more so then to seal them, and red is the strongest version - they must not wanted it to come apart, though a little time and a little oxidation usually locks them quite well enough anyhow.

Hope the area wasn't "classified" at the time you were using the torch to disassemble it.

 

[Fulthrotl]

I'm rewiring a machine where the OEM has used red Loctite on all of the C1D1 threaded conduit connections. I've had to use a torch to disassemble every threaded joint. Is this normal?

no. red loctite is stud and bearing mount.
why on earth would anyone use that to screw
pipe together? it's also an insulating adhesive.

when i've done ClI DivI, i've always used led plate,
to prevent corrosion, as it's usually a refinery or
sewage plant, and there's all sorts of corrosive fumes
around.

 

[schwarz633]

I agree with what Bob said.

Assuming "Locktite" was used to lock threads more so then to seal them, and red is the strongest version - they must not wanted it to come apart, though a little time and a little oxidation usually locks them quite well enough anyhow.

Hope the area wasn't "classified" at the time you were using the torch to disassemble it.

The machine hasn't been installed yet, so I was "safe" using the torch.

 

[mgookin]

LocTite is a brand name.
They make thread locker and they also make anti-seize.
IIRC correctly, red is the thread locker and the anti-seize is silver (or is it blue?). I also believe they have started making sealants which seal but neither lock nor inhibit locking.
Can you contact whoever built that and ask them what this is on there and why?
If it's wrong and nobody ever questions it, they're just going to keep on doing it.

 

[JFletcher]

LocTite is a brand name.
They make thread locker and they also make anti-seize.
IIRC correctly, red is the thread locker and the anti-seize is silver (or is it blue?). I also believe they have started making sealants which seal but neither lock nor inhibit locking.
Can you contact whoever built that and ask them what this is on there and why?
If it's wrong and nobody ever questions it, they're just going to keep on doing it.

anti seize is silver. blue loktite is for stuff you want to come back apart, just not by itself. I think they make other colors of thread lock for medium, high heat, and oil environments.

red loktite should be sold next to the welding supplies. op is on the right track with the torch tho:

http://www.us.henkel-adhesives-blog.com/post/All-About-Threadlockers/How-to-Remove-Red-Threadlocker/

so, yes, it is normal to need to torch to remove red loctite. is it normal for rmc to be secured this way? probably not.

 

[kwired]

There is also purple "Loctite" that is a low strength thread locker - best for use on smaller screws, like 1/4 inch or smaller if you think you may ever want to remove them.