mjbarnard wrote:
Yes the cone has to compress as you say. The thread does go all the way
up.

Sounds like time to change the bolts - difficult, sealing to
the thread...


Agree not a great design. You wouldn't believe what it cost! I think
the design is attributable to the 'back to wall' nature of the pan. The
back of the wc is not accessible once installed, so the design allows
removal/connection of the cistern to pan from the front/top without
pulling the wc away from the wall.

Not quite sure what 'tightly' means. It appears a close fit - but the
cone definitely feeds very easily over the bolt.

A close fit should be OK, bearing in mind that the shank of the
bolt needs the cone to compress onto it.


I could use a larger bolt - but am a bit wary of removing the captive
nut. It is actually not a nut but a piece of metal with appropriately
sized screw hole for bolt with metal wings underneath which stabilise
it within its hole. If I remove it and fail - I might be worse off.

I could use silicon exactly as you describe. I might try this next.

I should try to get another bolt (not a set bolt) - what's it made
of, BTW?


Not sure what gland packing means?

Stuff that's used to pack glands, where a shaft goes through. Like
a piece of cord, but made of PTFE, about 1/8" in diameter (these
yanks!). Wind it around the shank of your new bolt to replace the
cone. Just a possibility.