17 Plastics and polymers including polyurethanes and chlorinated polyvinyl chlorides for use in the fields of apparel, medical, communications, geophysical, audiovisual, military recreational, industrial, plumbing, industrial piping, fire sprinklers, construction, electronics, automotive, footwear, industrial equipment, and aerospace, plastic coatings for de-icing and erosion protection for transportation vehicle surfaces; fluid sealing products; gasketing, sealing and packing materials and gaskets, seals and packages; pre-formed gaskets, packings and seals, all for use in retaining and sealing fluids in pipelines and fluid handling machinery; synthetic and natural rubber, gutta-percha, caoutchouc, and products made therefrom.