"TheScullster" wrote in message
. uk...

"Bob Mannix" wrote

The O ring seals the downstream soil pipe (the other side from the water
in the trap) from the bathroom. The trap water forms part of this seal.
The gap without the O ring is very small and is unlikely to cause a
problem but it is possible that, with the wind in the right direction,
some foul air might seep past it. As you have found, it probably doesn't
matter!


Hey thanks Bob, that clears up the other mystery.
I was a bit slow there and didn't link the displaced seal to the new, not
particularly agreeable, aroma.
Are these seals easy to come by?

Don't know - they are bound to be available "somewhere"! If no-one knows
here then they probably aren't. You could buy a spare trap and have the
other bits ready to replace as well, of course.


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)