Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19 2X3NBR70ES found under O Ring by Eriks Bv. The National Stock Number assigned to this part is 5331121231925, 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 19 2X3NBR70ES.