- Welcome to the NEDC Tech Blog! We will be posting blogs about gaskets, sealing, extrusions, products, tapes, and other information that we come by in day to day operations. One of the most important things in our industry are the materials, products, and industries that they serve. The other things we will be posting include stories, and notifications concerning NEDC. Our goal is to inform our customers about the products that we manufacture, distribute, and sell. An archive for the blogs we have previously posted are below. For more information concerning the NEDC Sealing blog, please contact sales@nedc.com.