PTFE Sheets?

[GreenEnvy22]

https://www.amazon.ca/Stick-Teflon-Bant ... B076DDLJV7

Think these are pure PTFE? the listing indicates they are.
Thinking of using these for lids on mason jars, maybe also for some gasket material.

[acfixer69]

I use them for grilling veggies on the grill. They are too thin for a sealing gasket and are made by woven thread so would be too porous on a mason jar. IMO.

[GreenEnvy22]

I'm thinking using them under the normal mason jar lid (reversed), with the ring loosely on, to promote some air exchange.

[acfixer69]

Condensation will form on the steel and back to your product. I just letting you know for your information.

[SaltyStaves]

They are teflon coated eGlass.

I think they'd stand up to any jar sealing application in the short term, but being a spray-on product (like a fry pan), they won't last forever.