Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 90-8700-40025 found under Seal Nonmetallic Round Section by Cincinnati Gear Co The. The National Stock Number assigned to this part is 5330014393009, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 90-8700-40025.