Thanks Whitespirit. The only reason I initially used paste was that the internal threads on the boiler were very sharp and I thought it would tear the PTFE tape.
Thanks again.
I have fitted new pressurised heating system, but the threaded joints on boiler to pipework have slight leaks. I've used liquid ptfe which seems to have discoloured and oozing water droplets.
I realise I must drain down and repair but with PTFE tape or use PTFE paste again but a diiferent brand ?
Here's another DIY plumber question. I live in rural France and have installed an oil fired heating only, pumped, pressurised system.
The boiler is a Deville Carola 3 and has integral electrical thermostat connections linked. Most rads have thermostatic valves.
I bought in UK a Sunvic...