Review on 🔳 Buna N Sheet Gasket – The Perfect Black Thick Solution by Jeremy Black

As another reviewer noted, this material, presumably BUNA-N or nitrile, is not suitable for gas can caps. It swells, warps, and fails within hours, rendering any lid gaskets made from it useless. It may be suitable for other purposes, but not for gas cartridges. I'm very surprised that more reviewers haven't mentioned this important flaw, as that's the purpose many people buy this stuff for. You'll have to look elsewhere if you intend to use it for this purpose.