At One Click Purchasing, we are your reliable source for the NSN part HP-18A manufactured by Symmons Industries Inc. We carry a wide range of popular NSN items on our website, including Seal Nonmetallic Ro like part number HP-18A which is listed with the NSN 5330016056008 for easy identification. If you are interested in HP-18A 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.