Acoustical insulation for buildings; Asbestos cords and strings; Fittings, not of metal, for flexible pipes; Fittings, not of metal, for pipes; Fittings, not of metal, for rigid pipes; Flexible plastic pipes for conveying natural gas; Flexible plastic pipes for plumbing purposes; Flexible plumbing pipes of plastic; Flexible tubes of plastic; Gasket sealer for use in plumbing; Non-metal pipe couplings and joints; Plastic conduit for use with beverage dispensing machines; Plastic plumbing hoses...