Rubber, gutta-percha, gum, asbestos, and mica, all for use in the manufacture of linings, padding material and cushioning; plastics in extruded form for general industrial use; packing and stopping material for forming seals; flexible pipes, not of metal; partly-processed friction materials for brake lining; shock-absorbing buffers of rubber for industrial machinery; insulators for machinery cables; caulking compounds; clack valves of rubber for use in pumps; clutch linings; compressed air pipe fittings, not of metal; cords of rubber; cylinder joinings; expansion joint fillers for use in pipes, machinery, pumps, baths, mixers/agitators and hosing; non-conducting materials for retaining heat, namely polyurethane linings, rubber and ceramic linings; latex for industrial use; pipe gaskets, jackets and muffs, not of metal for use with polyurethane lined pipe, rubber pipe, ceramic lined pipe, tank pipes, drive pipes and hosing; reinforcing materials, not of metal, for pipes namely rubber, polyurethane rings; rings of rubber for use as pipe connection seals; water-tight rings for plumbing pipes; rubber sleeves and lining for protecting parts of machines; wear resistant rubber sheets for the lining of tanks, slurry pipes, steel vessels, mills and other mining machinery; seals for polyurethane lined pipe connections, rubber lined pipe connections, ceramic lined pipe connections, tank pipe connections, drive pipe connections, hose connections, nozzle connections, coal valves and pumps; stuffing of rubber or plastic; rubber material for recapping tires; valves of India-rubber or vulcanized fiber; washer of rubber or vulcanized fiber