Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N28011 found under Spring Packing Valv by Leslie Controls Inc. The National Stock Number assigned to this part is 5360010188779, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N28011.