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I prefer copper olives, I find they seal better aslong as you dont over tighten them.

As for fibre washers, I dont put anything on them.
 
I prefer copper olives as I seem to get a better seal with them plus I can use them on lpg.

I generally chuck the fibre washers that come with tap connectors and fit nylon ones instead as they don't split like fibre ones do. I don't use sealing paste on fibre washers as it can end up in the terminal fitting and cause blockages.
 
Should never use any paste on a fibre washer as when the poor plumber turns up several years down the line they will have a mini nightmare trying to sort the mess you have made by using paste !!!

Drives me insane when i come across this
 
Should never use any paste on a fibre washer as when the poor plumber turns up several years down the line they will have a mini nightmare trying to sort the mess you have made by using paste !!!

Drives me insane when i come across this

You must be a certified loon by now then as it's extremely commonplace. I admit I've used a thin smear of LSX on fibre washers before where the connector was piped to be slightly unstraight and at possibly under a little strain to fill any microscopic gap that appeared. I don't do this anymore after thinking it might have been behind/contributing towards some failures I've been having with cheap ball-valves.

As to olives, didn't realise brass was more suitable to heating applications. Learn something new everyday on here. I usually chuck brass and use copper on 22mm and above (who am I kidding, I've yet to work with anything above 22mm) because I fear a bigger pipe and a brass olive is a recipe for a not-fully compressed olive. Not from experience, just a hunch.
 
Fibre washers I stick in my gob and give them a good wetting before fitting so that they expand, not had a leak doing it this way. No need for paste, and for those muppets that use PTFE tape instead of a washer, I'd like to ..................
 
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Saliva is a great assembly lube for o-ring interfaces too. Biodegradable, non-toxic and non-corrosive (although probably best to not let the customer see 🙂 ). I used it on a shower cartridge last week and routinely give o-rings a good suck (ooh 'er missus) when servicing my diving regulators (it's actually recommended as an option in the service manual for my regs).
 
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Sorry I thought I had stumbled into a Carry on film script, Matron !!!


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system3;305171 and for those muppets that use PTFE tape instead of a washer said:
Shake my hand because i'm big and bad tempered :lol:

Everyone (well most of us older ones) have been guilty of that one at some point. Nothing worse than trying to find a fibre washer in a dark van. Done properly it will never leak.
 
I also use PTFE to bolster an old washer on traps when removing and replacing if I haven't got one to hand (or can't be bothered to search)
 

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