Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-350 N602-70 found under O Ring by Dolly Mfg Corp. The National Stock Number assigned to this part is 5331004702998, 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 2-350 N602-70.