11 Premanufactured high temperature ceramic components, consisting of muffle tubes, kiln furniture, saggers, boxes, beams, setters, thermocouple protection tubes, crucibles and plates, all for use in industrial furnaces, kilns, ovens and incinerators; premanufactured high temperature ceramic components consisting of seals and filters for use in heat exchangers; premanufactured high temperature ceramic components consisting of ceramic filters and fitted ceramic liners for machines used in connection with high temperature applications for use in power generation equipment and equipment used in oil exploration and production