Can you use two washer together?

[WaterTight]

Or will water get out through the microscopic gap between the two washers?

I imagine the application and water pressure might be factors.

So say, for instance, 2 x 3/4" washers on the connectors for a bar mixer shower

 

[Kyle87]

I've had to use two washers before and it worked. It was on outlet of an electric shower. I did the bathroom and they wanted to re-use the shower.

It wasn't my doing, that's how it was fitted and I just put it back as it was. Crap but it worked!

 

[Leo21]

The outlet of a shower has an open end. So no pressure really.

 

[stevetheplumber]

yes you can use two washers ive done it when there wasnt enough thread left on a bar mixer

 

[Ermintrude]

Done it before! Smear a bit of paste of face of joining washer if your worried.

 

[turnpin]

Works on washing machine valves and hoses under mains pressure for Me ...regards Turnpin

 

[gassafe]

Probs best not to do it on gas tho

 

[Kyle87]

Probs best not to do it on gas tho

Just use speedfit.