Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RMS11A-437 found under Retainer Packing by Universal Friction Composites Inc. The National Stock Number assigned to this part is 5330010450154, 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 RMS11A-437.