17 Raw, semi-worked or partially processed rubber and gutta-percha, asbestos, mica; packing and insulating materials; sealing and packing cord in the nature of sealing and packing materials; packing and stopping insulating materials; non-metal seals for use in electronic sensors; automotive parts, namely, non-metal gasket support rings for use in fluid distribution, not for use with land vehicle engines and motors; artificial resins, namely, fluorocarbon resins and elastomers being semi-finished products in the form of plates, tubes, rods, blocks, non-metal flexible pipes, fittings, expansion joints; sealing materials in the form of films for sealing purposes; sealing materials in the form of filling material for reaction columns, balls; electrical insulating materials, namely, guide tubes, insulating tubes and insulating parts for electrical purposes, having springs with corrosion-resistant coatings for sealing purposes; all of the aforesaid goods being made in whole or predominantly of plastic, in particular of fluorocarbon resin and elastomers; non-metal packings for static seals; non-metal seals for shock-absorbers and gas springs, not for machines; non-metal seals for hydraulic and pneumocylinders other than for machinery and land vehicle engines; sealing plates being sealing materials; insulating foils being insulating materials; sealing frames being sealing materials; non-metal hydraulic and pneumatic seals, in particular rod seals other than for machinery and land vehicle engines; non-metal wiper rings and guide rings for sealing against oil, grease or air in hydraulic and pneumatic cylinders other than for machinery and land vehicle engines; plastics in extruded form for use in further manufacturing; plastic in extruded form made primarily of elastic rubber-like plastics combined with other plastics and metal for use in further manufacture; semi-finished injection molded products made primarly of elastic rubber-like plastics combined with other plastics and metal for use in further manufacture; semi-finished plastic made primarily of elastic rubber-like plastics combined wtih other plastics and metal in the form of boards, sheets and flaps, profiles, discs and washers; diaphragms, in particular accumulator and separator diaphragms, pump diaphragms, regulating and switching diaphragms in the nature of water proofing membranes; partitions, being diaphragms, in particular being diaphragms of elastomers in the nature of water proofing membranes; semi-finished solid silicone parts, in particular jet formers for showers, seals, diaphragms, housing parts, injection-moulded parts being semi-finished injection molded products for use in a variety of industries; moulded parts for machine elements made of liquid silicon, namely, seals and sealants; stuffing box packings in the nature of seals other than for machinery and land vehicle engines; non-metal seals, namely, oil seals, fluid seals, insulating seals, reinforced seals, elastomeric seals, seals for pistons and rods, namely, cups, rings, packings and gaskets, all the foregoing for sealing oil, grease or air in hydraulic and pneumatic applications other than for machinery and land vehicle engines; plates of graphite-based materials for use as sealing rings, packing seals and heat insulation; slide ring packings; glide ring packings; non-metal seals, and sealing support rings as finished goods for sealing oil, grease or air in hydraulic and pneumatic applications other than for machinery and land vehicle engines; shaped semi-finished parts of vulcanised perfluoroelastomers for use in further manufacture, namely, in the form of seals and O-rings, for use in hydraulics, pneumatics and mechanical engineering