Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GR2-4 found under Gasket by Hobart Corporation. The National Stock Number assigned to this part is 5330001232756, 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 GR2-4.