Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 18CG found under Seal Conical Specia by Weldcraft Customer Service. The National Stock Number assigned to this part is 3433013855911, and the Federal Supply Class is 3433 Gas Welding Heat Cutting And Metalizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 18CG.