Replacement Shower Arm

[Geoff Billson]

Because there is a 5 inch gap between the tiled plaster board and the faceplate elbow screwed to the noggin I need to join an extension to my new shower arm to ensure sufficient length of arm into the shower cubicle.
I will therefore have 2 joins. The 1/2 inch BSP thread of the showerarm into the extension and the 1/2 inch BSP thread of the extension into the fixed wall plate.
My question is what is the best method to ensure a water tight seal on both these joints. Do I use a rubber washer or just sealing tape such as ptfe or locktite string?
Recommendations would be greatly appreciated.

 

[Burger]

Rubber for me personally, but haven’t used loctite 55.

 

[Geoff Billson]

Thank you

 

[rpm]

Loctite 55 here.
How will the rubber washer seal a male/female joint without a sealing face.

 

[Burger]

Loctite 55 here.
How will the rubber washer seal a male/female joint without a sealing face.

I don’t follow, which sealing face will it not have?

 

[Welder]

Personally id use a fibre washer if the fitting allows. Its more solid.

 

[rpm]

I don’t follow, which sealing face will it not have?

Personally id use a fibre washer if the fitting allows. Its more solid.

From the two comments above it would seem I`ve misunderstood the connection - Sorry.

 

[Geoff Billson]

Good advice thanks. I have not yet removed the old arm or purchased the extension so I am not sure about the sealing face situation. I imagine the face plate on the noggin is likely to have a sealing face but not sure about the extension. Sounds like the best option is a sealing washer if the fitting allows it or otherwise Loctite cord or maybe both if the situation allows it. Is that the way to go?

 

[Riley]

How will you get the washer into the wall fitting??

 

[Geoff Billson]

Good point.It may already have one or I might be able to access it through the plaster board. Will have to face the problem on the day.

 

[Riley]

Is it metal to metal ??

 

[rpm]

Is it metal to metal ??

Haha, know where you are going with this

 

[Riley]

Am I that predictable

 

[rpm]

Am I that predictable

You're flowing like liquid m8

 

[Riley]

And coincidentally....

 

[Geoff Billson]

Yes it is metal to metal.

 

[Riley]

Loctite 577 - boom

 

[rpm]

Loctite 577 - boom

Wot no drum roll?

 

[rpm]

Could of stolen your thunder but I'm nice like that

 

[Riley]

Could of stolen your thunder but I'm nice like that

Aren’t you ​

 

[Geoff Billson]

Thanks Guys for all the advice.