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I Forge Iron

Thread seal on PROPANE fittings?


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The different colors typically designate the thickness of the tape. When we do natural gas lines we use tape then dope. I use blue monster tape on all pipe thread joints. 

Now let’s start the debate between tape lubricating or sealing. 

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It does both, but as far as I know the colour indicate the density.

There is white that is single or double density, yellow is double density. I believe there is pink that is triple density and green that is oil free to use on oxygen lines. 

I, however, have a roll of pink 'teflon' sealant and it does not feel triple at all :)

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