Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OR17X1 5 72NBR872 found under O Ring by Freudenberg Simrit Gmbh And Co Kg. The National Stock Number assigned to this part is 5331121546960, 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 OR17X1 5 72NBR872.