Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2A7-1637 found under Gasket by Lake Shore Systems Inc. The National Stock Number assigned to this part is 5330012529935, 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 2A7-1637.