At One Click Purchasing, we are your reliable source for the NSN part AN123997 manufactured by Marshall Excelsior Co. We carry a wide range of popular NSN items on our website, including O Ring like part number AN123997 which is listed with the NSN 5331002859785 for easy identification. If you are interested in AN123997 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.