Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CP89A006 found under Retainer Disk Valve by Garlock Sealing Technologies. The National Stock Number assigned to this part is 4820013728015, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CP89A006.