Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XSZUDG1218A found under Parts Kit Seal Repl by Trelleborg Sealing Solutions Us Inc. The National Stock Number assigned to this part is 1615015009681, and the Federal Supply Class is 1615 Helicopter Rotor Blades Drive Mechanisms And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XSZUDG1218A.