Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 502-2200 found under Filter Particulate by Nellcor Puritan Bennett Incorpor. The National Stock Number assigned to this part is 4240015633504, 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 502-2200.