At wits end with cast iron rad

[Gray0689]

Always flax and paste over here lol

 

[IDCHAPPY]

Boss white for rad tails is the best & will often seal after hot water heats it.
If you have very few threads - ptfe is not great. I agree that hemp (flax, as I call it) makes a garanteed seal, but I hate that it seizes rock solid.

+1 for boss white on rad tails 🙂

 

[IDCHAPPY]

Some older plumbers have sprinkled 'polyfilla' into boss white when it is brand new and
all oily - others just leave the top off for a week or so - BUT BOSS GREEN with 'ptfe' IS the most unsuitable jointing paste I have ever used - IT IS RUBBISH it sticks to nothing centralheatking

Boss Green is gash, *used* it once and never again :lol:

 

[stevetheplumber]

Flax is a product from N ireland and it is a great sealong product chk

agreed it just rolls of everything

 

[mfgs]

Hemp and boss white as a last resort, although gas ptfe (3-4 wraps) and a bit of lsx normally works for me when a threaded joint is being a bit of a nightmare.