Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GT4053-304 found under Seal Nonmetallic Special Shaped Section by Stewart And Stevenson Power Inc. The National Stock Number assigned to this part is 5330013109976, 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 GT4053-304.