Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SYB0221 found under Breathing Apparatus Oxygen Gener by Dcns Navires Armes Lorient. The National Stock Number assigned to this part is 4240006162857, 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 SYB0221.