Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 101-228 found under Packing Tube Seal by Sheffer Corp. The National Stock Number assigned to this part is 5330009655223, 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 101-228.