Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 191 02 B2 found under Seal Parts Kit by Vacuum Products Inc. The National Stock Number assigned to this part is 5330012005714, 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 191 02 B2.