Hi John
Hope you don't mind, but I implore you, don't use WD40 with anything that has o-rings (nitrile or EPDM) in it. WD40 is hydro carbon based so that literally causes the rubber to break down (almost kinda dissolve).
In this instance, one is better off taking it out and soaking in warm...
Old post I know but a few facts to help people out.
There are approx 2000 different types of separate hot and cold ceramic disc cartridges installed in taps in the UK.
This is a list of what changes:
height from shoulder to top of splines (22-120mm)
size of cartridge (1/2", 3/4" 3/8")
Number...
An interesting discussion. Personally I charge for my bathroom quotes. But if they go with me then they get that back.
What I've found is that if you provide a quote for nothing they don't place any value on your service! Once they have to shell out then that bit of paper (and your effort...