Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W3926-250 found under Seal Plain Encased by Waterous Company. The National Stock Number assigned to this part is 5330000733513, 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 W3926-250.