Are these O2 compatible?
KEN L These are ment to be used with Standard 21% air mix but they will work in a pinch. It is the repedative use with high O2 mixes that will cause them dryrott faster. I have this pack and I use them in my "air" tanks as far as my tanks that I use Nitrox in I am going to get item #AQUNORK. These are Nitrox O rings.
BRIAN R They are NOT.
SKU: AQUNORK is the same kit for nitrox. Even that kit I'm not positive if they are O2 rated or just nitrox-40.