Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 788 40MM found under Packing Preformed by Mival Materiali Industriali Valvole. The National Stock Number assigned to this part is 5330151117595, 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 788 40MM.