Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C25A00401 found under Sensor Hyperbaric Oxygen by Biosystems Inc. The National Stock Number assigned to this part is 4220010407290, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C25A00401.