Profile: Inertech, Inc provides expanded PTFE gasketing and sealing solutions to a variety of industries and processing plants. We are an ISO-9001:2000 certified company. Our products are the new sealing standard for minimizing leakage and fugitive emissions. Inertex valve stem packing is a highly pliable product that will conform to worn valve stems and packing glands. Inertex® SQ-S sheet in tape form is produced with a full adhesive backing and it is used primarily for glassed flanges and for other highly deflective surfaces.