ASAP Purchasing supply the entire range of NSN parts to Military and Defense Industry. Request quote for part number 2-139 E540-80 by Oring Division Europe with desired quantity, targeted price and order-fulfillment date. Our dedicated account manager get in touch with you in 15 minutes. ASAP Purchasing assist you 24/7 for all of your NSN parts requirements. All bill of materials (BOM) can be email to sales@asapsemi.com in an excel format.