Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HL19399 PIECE 263 found under Gasket by Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions. The National Stock Number assigned to this part is 5330012686828, 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 HL19399 PIECE 263.