Profile: Lindstrom & King Co., Inc. is the manufacturer of valve stem packing rings for the global market. Our rings are custom made to meet our client's specifications from a wide variety of standard shapes - flat end (or square), domed & flanged, beveled, inverted bevel & others - and materials. We offer a revolutionary mixing method of aramid & polyolefin fibers which have made our asbestos-free rings stronger and long lasting. Our endless die formed rings are used in many valves replacing the more expensive braided rings.