Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 44B3021-610FPC16F12 found under O Ring by Elliott Company. The National Stock Number assigned to this part is 5331010920810, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 44B3021-610FPC16F12.