Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C-5527 IT20 found under Packing Preformed by Pratt Henry Co. The National Stock Number assigned to this part is 5330012694370, 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 C-5527 IT20.