Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 990 00 22 1039 found under O Ring by Steyr Nutzfahrzeuge Ag. The National Stock Number assigned to this part is 5331121415101, 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 990 00 22 1039.