Leaking rad tails

[Phil66]

Hello all,

I have recently had to change a radiator. The new one is 500mm but the old one was 540mm. I got some extention tails from Wickes, they only had 40mm ones but that doesn't seem to matter as they screw well into the radiator. I have got a very very small leak from the tails, (1 or 2 drops a day) I put quite a bit of PTFE round the thread. Is it just a matter of wrapping more ptfe round or am I doing something wrong?
I am an engineer not a plumber but I don't like the way the tail screws into the radiator without "locking up" to a shoulder or anything. Also the gland nut slides along the pipe that screws into the radiator, there must be a sealing ring in there but are they reliable long term?
Picture of item here http://www.wickes.co.uk/invt/424914

Any help appreciated

Cheers

Phil

 

[giblets]

Bloody awful things!!

Unless there is no strain on the fitting at all they will leak. They will also leak after a year or so when the internal o-ring fails.

 

[namsag]

Agree tottaly with giblets ,pile of sh#te