Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DIN 3771-24 4X3 1-N NBR70 found under O Ring by Bombardier Aerospace. The National Stock Number assigned to this part is 5331015138044, 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 DIN 3771-24 4X3 1-N NBR70.