Ceramic wares; for laboratory, chemical or other technical uses, other than articles having a hardness equivalent to 9 or more on the Mohs scale or of porcelain or china6909.19

Other

Ceramic ring with rectangular transversal section having an external diameter of 19|mm or more (+|0,00|mm/-|0,10|mm) but not more than 29|mm (+ 0,00|mm/-|0,20|mm), an internal diameter of 10|mm or more (+|0,00|mm/- 0,20|mm) but not more than 19|mm (+ 0,00|mm/-0,30|mm), a thickness variable from 2|mm (±|0,10|mm) to 3,70|mm (± 0,20|mm) and heat resistance 240|°C or more, containing by weight: -|90|% (±|1,5|%) of aluminium oxide -|7|% (±|1|%) of titanium oxide

Silicon nitride (Si3N4) rollers or balls

Ceramic proppants, containing aluminium oxide, silicon oxide and iron oxide

Supports for catalysts, consisting of porous cordierite or mullite ceramic pieces, of an overall volume of not more than 65|l, having, per cm$2|of the cross-section, not less than one continuous channel which may be open at both ends or stopped at one end

Ceramic-carbon absorption or adsorption cartridges of fuel motor vehicle systems, with the following characteristics: -extruded fired ceramic bound multicellular cylindrical structure, -5 % or more by weight but not more than 70 % by weight of activated carbon, -30 % or more by weight but no more than 90 % by weight of ceramic binder, -with a diameter of 29 mm or more but no more than 41 mm, -a length of not more than 150 mm, -fired at temperature of 800 °C or more

Ceramic-carbon absorption cartridges with the following characteristics: -extruded fired ceramic bound multicellular cylindrical structure, -10 % or more by weight but not more than 35 % by weight of activated carbon, -65 % or more by weight but not more than 90 % by weight of ceramic binder, -with a diameter of 29 mm or more but not more than 41 mm, -a length of not more than 150 mm, -fired at temperature of 800 °C or more, and -for vapours adsorption, of a kind used for assembly in fuel vapours absorbers in fuel systems of motor vehicles

Ceramic articles made of continuous filaments of ceramic oxides, containing by weight: -|2|% or more of diboron trioxide, -|28|% or less of silicon dioxide and -|60|% or more of dialuminium trioxide

Ceramic-carbon absorption cartridges with the following characteristics: — extruded fired ceramic bound multicellular cylindrical structure, — 10 % or more by weight but not more than 30 % y weight of activated carbon, — 70 % or more by weight but not more than 90 % by weight of ceramic binder, — with a diameter of 29 mm or more but not more than 41 mm, — a length of not more than 150 mm, — fired at temperature of 800 °C or more, and — for vapours adsorption, of a kind used for assembly in fuel vapours absorbers in fuel systems of motor vehicles

Ceramic-carbon absorption cartridge: - extruded fired ceramic bound multicellular cylindrical structure - 10 or more % by weight but not more than 30 % by weight of activated carbon, - 70 or more % by weight but not more than 90 % by weight of ceramic binder, - with a diameter of 29 mm or more but not more than 41mm, - a length of not more than 150 mm, - fired at temperature of 800°C or more, - for vapours adsorption of a kind used for assembly in fuel vapours absorbers in fuel systems of motor vehicles

Supports for catalysts, consisting of porous ceramic pieces, of a blend of silicon carbide and silicon, with a hardness of less than 9|on the Mohs scale, with a total volume of not more than 65|litres, having, per cm$2|of the surface of the cross section one or more closed channels at the tail end

Supports for catalysts or filters, consisting of porous ceramics made primarily from oxides of aluminium and titanium; with a total volume of not more than 65|litres and at least one duct (open on one or both ends) per cm$2|of cross section

Ceramic heat sinks, containing by weight: -|66|% or more of silicon carbide, -|10|% or more of aluminium oxide for maintaining the operating temperature of transistors, diodes and integrated circuits in products of headings 8521|or 8528

Ceramic heat sinks, containing by weight: -|66|% or more of silicon carbide, -|15|% or more of aluminium oxide for maintaining the operating temperature of transistors, diodes and integrated circuits in products of headings 8521|or 8528

Other