At One Click Purchasing, we are your reliable source for the NSN part 4140 manufactured by Southern Ambulance Builders Co Inc. We carry a wide range of popular NSN items on our website, including Vacuum Diaphragm like part number 4140 which is listed with the NSN 2540012633170 for easy identification. If you are interested in 4140 item, then take the advantage of our online RFQ service, or peruse our website as you see fit to find other items of interest that you may wish to learn more about.