At One Click Purchasing, we are your reliable source for the NSN part 127-189-018 manufactured by Avionics Specialist Inc. We carry a wide range of popular NSN items on our website, including O Ring like part number 127-189-018 which is listed with the NSN 5331000593113 for easy identification. If you are interested in 127-189-018 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.