Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 64B2077 found under Boot Dust And Moisture Seal by A P M Hexseal Corporation. The National Stock Number assigned to this part is 5340002677132, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 64B2077.