Semi-worked synthetic plastics and synthetic resins in semi-finished extruded form for use in manufacture; packing materials; insulating materials; pipe gaskets; reinforcing materials, not of metal, for pipes; weatherstripping compositions for use in homes, industrial buildings, roads and bridges; synthetic resins, semi-processed; caulking compounds; non-metal gaskets for sealing building structures; non-metal gaskets for waterproof sealings of expansion joints in concrete surfaces; padding m...