ptfe tape

[franz]

can anyone tell me the difference between normal ptfe tape and gas ptfe tape please?

 

[mikegas]

I thought It was just thicker

 

[franz]

so its the same stuff.? not wanting to be thick! but what difference does it make?

 

[plumbdoctor]

single wrap or multi wrap

 

[franz]

explain please

 

[gasmarc]

one is thicker and designed for gas and the other is designed for water and thiner is my uptake

 

[plumman]

They are the same material, i.e., both "100% pure, virgin PTFE and containing less than 0.1% wt residual lubricant".

The only difference is the thickness, 0.20 and 0.075mm.​

 

[GrahamM]

Are they not essentially different products manufactured to different standards?
The yellow gas tape MUST be used for gas.

 

[sparra1100]

normal ptfe only for use with water as it deterates over time and will leak were a gas yellow stuff is guarenteed for a minimum of 5 yrs and does not deterate with gas

 

[wheeto]

normal ptfe only for use with water as it deterates over time and will leak were a gas yellow stuff is guarenteed for a minimum of 5 yrs and does not deterate with gas

Really? What's your source for this? I only ask as I've been trying to find out for ages what the difference is ... so far the only answer has been "yellow is for gas"! Not helpful!

Edit: Especially the five year part. What's the point in saying a gas fitting will only be gas-tight for 5 years?? If it's not going to last 50 years, it might as well only last six months.