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.
mechanical compression packing of aramid fibers, meta-aramid fibers, para-aramid fibers, carbon fibers, graphite, seals of expanded polytetrafluoroethylene, fluoroelastomer, namely, fluoro rubber, and silicone rubber for sealing and packing pumps, valves, rotary shafts, and reciprocating shafts