Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GASTEC-5L 1 25-200 PPM found under Indicator Tube Gas by Skc Inc. The National Stock Number assigned to this part is 6665015677623, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GASTEC-5L 1 25-200 PPM.