Is PTFE safe on a cooker?

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Hi,

One of my neighbours recently had a gas leak (abeit minor) at the connection to their cooker. They called a corgi safe engineer out and he told them that it hadn't been installed correctly because over time PTFE leaks.

Now Ive checked behind mine and it's just a normal bayonet to the cooker... but it also has PTFE tape where the bayonet is joined to the cooker; there are some threads visible (i..e it is't tigtened all the way). Is this something I should worry about?

Thanks
 
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Absolutely nothing wrong with a properly made gas ptfe connection to a cooker. Thin standard plumbing ptfe should not be used
But some cooker manufacturers ask for paste on the connection and not ptfe
 
I rang the guy who installed it and he said it's all ok because he used the special gas PTFE
 
You could have called him in the beginning.

Not only will he have made the joint but will have tested it too!
 
You could have called him in the beginning.

Not only will he have made the joint but will have tested it too!
Well to be honest he didn't sound too happy when I called him to ask about it!
 
Many moons ago Ptfe tape plumbing rolls were all the same thickness.Then as far as I can gather the boffins decided the gas type had to be twice as thick...and you could not possibly just wrap twice as much of the thinner stuff round!...Another example of over complicating simple things.
 
I think you would find that it is not just thicker. Towns gas was inheritantly "moist", whereas Nat Gas is not.
 
To be fair to the boffins, the gas type is so much thicker that it has less propensity to tear when the joint is done up.

I also seem to vaguely think that the current PTFE tape is much thinner than it used to be say 30 years ago.
 

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