Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3R80-042-04544-0720 found under Booster Pressure Oxygen by Capital Rubber And Industrial Supply. The National Stock Number assigned to this part is 4240015439522, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3R80-042-04544-0720.