Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W19803 found under Packing Preformed by Pall France Sa Division. The National Stock Number assigned to this part is 5330013514086, 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 W19803.