Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 520 051 found under Seal Nonmetallic Sp by Kirby Morgan Dive Systems Inc. The National Stock Number assigned to this part is 5330016093235, 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 520 051.