Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SX212400 found under Parts Kit Seal Replacement Mecha by Woods T B Sons Co. The National Stock Number assigned to this part is 5330013657405, 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 SX212400.