Machines, apparatus, plant, components and ancillary equipment used to seal, isolate, or contain extreme environments, in particular furnaces, ovens or similar machines or cryogenic, vacuum, nuclear, radioactive, toxic, corrosive, flammable of explosive environments; vacuum components, fittings and fabrications; pumps; valves; glass to metal seals, glass encapsulated vacuum gauge heads, viewing windows; glass and ceramic feeding troughs; glass vacuum vessels and fittings; parts and fittings for all the aforesaid goods
MachineryScientific, controlling apparatus and instruments, computers, computer systems, computer hardware, computer software; computer controlled apparatus and instruments; active gauge controllers; bakeout heater controllers, parts and fittings for the aforesaid goods; all the aforesaid goods for use with machines, apparatus, plant, component and ancillary equipment used to seal, isolate, or contain extreme environments, in particular furnaces, ovens or similar machines or cryogenic, vacuum, nuclear, radioactive, toxic, corrosive, flammable or explosive environments
Electrical and Scientific Apparatus