Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V21-4H3F found under Packing Assembly by Ortman Fluid Power Quincy Compre. The National Stock Number assigned to this part is 5330001592813, 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 V21-4H3F.