Jointing compound

[Eyespy999]

Hi, planning to replace bath taps. I am looking to also replace the fibre washers in the old tap connectors however is it best practice to use some jointing compound? I understand jet blue is used on compression fittings but wondered if anything else is considered?

many thanks

 

[Best]

Yes, you could use a little smear of V Lube, I think it's called, which is similar to Jet Blue, on both sides of the fibre washer. It also helps keep the washer in place.
It is possible to get identical sized washers made of a "rubber", which are for some plastic tap fittings designed for flat washers.

 

[Eyespy999]

Thanks for the swift reply I will take a look on screwfix cheers

 

[tolly]

Hi, planning to replace bath taps. I am looking to also replace the fibre washers in the old tap connectors however is it best practice to use some jointing compound? I understand jet blue is used on compression fittings but wondered if anything else is considered?

many thanks

I use a Jet Blue type compound on fibre washers with tap conns no problem, you may be overthinking things though, but that's not a bad thing.

 

[Best]

No Nonsense Gas & Water Jointing Compound 300g | Sealers & Compounds | NoLinkingToThis

No idea how good this is, but it is for potable water and similar tub to Jet Lube

 

[plumben]

I use a smear of paste on both sides of the washer
Any paste suitable for potable water will be fine

 

[lame plumber]

just use the fibre washer, it's what they are there for.

 

[hammers4spanner]

Or try using using a plumber thats what we are here for

 

[lame plumber]

Or try using using a plumber thats what we are here for

I prefer it if they try it themselves first, then I can look good and my prices always seem reasonable when there is water flowing down the stairs and out the front door

 

[LaMont5way]

Personally I have never used compounds or pastes on washers of any kind. Bit like putting ptfe on olives, I've never felt the need to do that either unless it's a last resort.

 

[jim fennessey]

never use any of them pastes and stuff never had a leak yet do your compression right, and you should have no problems .

 

[Best]

never use any of them pastes and stuff never had a leak yet do your compression right, and you should have no problems .

Two bits of metal squashed together doesn't mean they will be a perfect seal.
Slight corrosion - white or green at a joint, or seized nuts, is microscopic leaks.
And these cheap compression fittings nowadays aren't great quality.
Paste acts as a fine sealant and improves the joint. Also lubricates it for tightening - no squealing & very noticeably less resistance when tightening.
But it is whatever you are used to.

 

[jim fennessey]

lol

 

[Best]

lol

But it's true! :smile:

 

[leethegasman]

Fibre washers should be fine on there own with no paste the idea is that they swell when wet,but each to there own.

 

[Rckape]

I've never pasted a washer, but I do use it on compression joints.

 

[lame plumber]

But it's true! :smile:

really, how come I can use an olive on a comp joint for a diesel injector system working at around 6000psi+ and not need any jointing compound ?

 

[Best]

really, how come I can use an olive on a comp joint for a diesel injector system working at around 6000psi+ and not need any jointing compound ?

That's because you are wonderful! :smile:
Truthfully, it no doubt depends on the pipe the olive is compressing onto and the olive quality also. But water certainly has a tendency to eventually pass very slightly on compression fittings, especially after some time on hot pipes.

 

[lame plumber]

got to use brass olives though, but thanks for pointing out how wonderful I am