17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
non-metal, removable, replaceable insulation for encasing piping, valves, manways, flanges, heat exchangers, gas turbines, exhaust systems, steam turbines, vessel heads, pumps, strainers, expansion joints, compressors, inspection ports, plastic extruders, diesel generator exhaust, piping, tanks, vessels strainers, regulators, steam traps, engines, reactors, fans, blowers, headers, dryers, hoppers, and heat generating equipment