Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HBV-B2-04-0011-15 found under O Ring by Bnl Industries Inc. The National Stock Number assigned to this part is 5331015619652, 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 HBV-B2-04-0011-15.