ASAP 360 Unlimited is an ASAP Semiconductor owned and operated website, and stocks multiple a-boards, including Ring Spring Valve 12840 AND 13277, 12840 from the NSN components manufacturer Leslie Controls Inc. With an inventory of over six billion parts for the aviation and aerospace industries, we are always ready to fulfill your NSN parts procurement needs. The ASAP approach includes strict quality control methods that verify the Ring Spring Valve parts and screen for imperfections, and our strong supply chain network stretching across the United States ensures we have some of the fastest shipping times in the industry. We are also the only independent distributor for Ring Spring Valve parts with a No China Sourcing policy. If you want to begin today, you can submit an Instant RFQ form from this page to get started.