Doing a 'quick' plumbing job on the way home today, had to dismantle a Speedfit elbow to get at another pipe. T'was under a bath.
Came to reassemble it, no 'O' ring to be found. Searched the entire bathroom with a torch and concluded that said 'O' ring had fallen down a hole in the floor.
Didn't have another fitting on the van, off to B&Q through terrible traffic (we have a Dickens Xmas festival going on),
New pushfit fitting purchased, back to the job and there in plain view is the missing bloody 'O' ring!
Sometimes I hate plumbing.