Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PE3729871 found under Packing Labyrinth by Peck Equipment Co. The National Stock Number assigned to this part is 5330003729871, 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 PE3729871.