Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS-45S8 ITEM 12 found under Packing Lower by Swagelok Ltd. The National Stock Number assigned to this part is 5330010678974, 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 SS-45S8 ITEM 12.