Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-381 N602-70 found under O Ring by Dolly Mfg Corp. The National Stock Number assigned to this part is 5331007632637, 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 2-381 N602-70.