Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SW25442-2 found under Valve Pneumatic Tire by Drs Sustainment Systems Inc. The National Stock Number assigned to this part is 2640007296081, and the Federal Supply Class is 2640 Tire Rebuilding And Tire And Tube Repair Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SW25442-2.