Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W18M1 found under Seal Plain Encased by Skf Usa Inc. The National Stock Number assigned to this part is 2930009550300, and the Federal Supply Class is 2930 Engine Cooling System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W18M1.