Owned and operated by ASAP Semiconductor, ASAP NSN Parts is your new one-stop-shop for all your seat ring and plug NSN parts and components related needs. Our goal is to make the parts purchasing process as simple as possible. With us, you can find seat ring and plug with NSN 4820-01-120-0455 and manufactured by Hammel Dahl Inc at some of the most competitive prices in the market. Just fill out and submit an RFQ to get started on a quick and competitive quote.