Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 02512B78ANU31B6 found under O Ring by Trelleborg Sealing Solutions Conde. The National Stock Number assigned to this part is 5331144251995, 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 02512B78ANU31B6.