Rubber, gutta-percha, gum; plastic material in extruded form for use in production; packing, stopping and insulating materials; flexible tubes, not of metal; insulating products, namely, for insulating against sound, cold, heat, impact, vibration, shock, moisture and environmentally hazardous substances, in particular for vehicle and machine construction and for the building sector, conveyor installations, public roads, noisy environments, and sports and leisure facilities; the aforesaid insu...