Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL1-78-39.0 REF 15B found under Parts Kit Seal Repl by Link Belt Construction Equipment. The National Stock Number assigned to this part is 5330014486189, 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 PL1-78-39.0 REF 15B.