Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JE82181 found under Pin Piston by Mks Instruments Inc. The National Stock Number assigned to this part is 4310009795741, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JE82181.