Monobloc still leaking from base after replacing O Rings

[MikeL44]

Hi, I have an Abode Davenport monobloc kitchen tap which started leaking from the base of the spout when the taps were turned on. I sourced the o rings from the manufacturer and replaced them, but it is still leaking. Any ideas please? The tap cartridges are fine as it only leaks when the taps are turned on. Thanks in advance.

 

[Exedon]

Not in a hard water area by any chance?

 

[MikeL44]

I think it's moderate. North Wales LL18

 

[terryplumb]

Is the innards of the tap ,where O rings are fitted, clean and free of Limescale ?

 

[Exedon]

Certainly water hardness (or any other debris) can scratch/damage where O rings seal.
I take it you used silicone lubricant grease to assemble?

 

[MikeL44]

I cleaned the valve seats but didn't notice much. The advisor in B & Q said to use valeline, but I since read not to use this, so I cleaned it off. I fitted without the grease as I didn't have any and thought it wouldn't make a difference in the short term. Can I use silicon spray or is that too thin? I might just give in and buy a new tap!

 

[Alec_t]

Perhaps an O-ring got a bit damaged when the tap was re-assembled?

 

[MikeL44]

Lol. My wife ran out of patience so bought a new tap. More DIY dramas tomorrow when fitting!

 

[Madrab]

Very few seals are rubber these days, they are all man made, nitrile - silicone - Neoprene - EPDM therefore any mineral lubricants attack/degrade the seals over time - Silicone grease/oil is the recommended lubricant.

Even the tap tail seals need a little before screwing in (for your new tap)

 

[MikeL44]

Thanks, I was wondering about that.