Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WB350A13900AM3L found under O Ring by Cimd Centre Didentification. The National Stock Number assigned to this part is 5331143733030, 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 WB350A13900AM3L.