At One Click Purchasing, we are your reliable source for the NSN part 283020-000 manufactured by Undersea Systems International Inc. We carry a wide range of popular NSN items on our website, including O Ring like part number 283020-000 which is listed with the NSN 5331015270242 for easy identification. If you are interested in 283020-000 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.