Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 661 5PC8 NO2 OVS found under Retainer Packing by Flowserve Corporation. The National Stock Number assigned to this part is 5330012553383, 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 661 5PC8 NO2 OVS.