Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PP 023AB 0900 found under O Ring by Siemens Demag Delaval Turbomachi. The National Stock Number assigned to this part is 5331011854526, 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 PP 023AB 0900.