Breathing air concepts can get me the length that I need but they did say that the company they order from is a hydraulics company and that the hoses aren’t oxygen cleaned. They specifically said that the hydraulics company doesn’t use any lubricants in making the hose since it’s a crimp fitting. My thoughts are as long as I clean the ends well it should be ok. But should I be concerned about the inside of the hose itself? It’s the same hose as northeast scuba sells. And I highly doubt that anyone runs oxygen cleaner through the hose. And even if you did it wouldn’t necessarily do much. All of the hoses I’ve gotten thus far were oxygen cleaned by the distributor. This is the first time I’ve had this come up. So do you think as long as I clean the ends I should be good? I can’t imagine NESS does anything special with there’s to ensure they’re oxygen clean inside the hose.