Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A25141-243-4058-90 found under O Ring by Barksdale Inc. The National Stock Number assigned to this part is 5331011285184, 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 A25141-243-4058-90.