Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D9959-8-2A found under Chamber Air Ejector by The Graham Corporation. The National Stock Number assigned to this part is 4620013073307, and the Federal Supply Class is 4620 Water Distillation Equipment Marine And Industrial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D9959-8-2A.