Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WB270A01840ARNL found under O Ring by Cimd Centre Didentification. The National Stock Number assigned to this part is 5331142653874, 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 WB270A01840ARNL.