7 component parts of gas turbine engines not for land vehicles, namely, enclosures; gas filters for large silencers for use with gas turbine electrical power generators; inlet air filters for engines, namely, gas turbine engines; inlet and exhaust silencing units for gas turbine engines; machine and motor parts, namely, magnetic coupling seals; component parts of gas turbine engines not for land vehicles, namely, coupling covers; replacement parts of gas turbine engines not for land vehicles, namely, coupling covers; component parts of gas turbine engines not for land vehicles, namely, coupling guards; replacement parts of gas turbine engines not for land vehicles, namely, coupling guards; structural parts for power generation gas turbine engines not for land vehicles, namely, exhaust and silencing systems comprising free-standing or structurally supported exhaust stacks and silencer baffles and panels, inlet air treatment systems comprising filter houses, filter modules and cartridges, fog cooling systems comprising tubing arrays and nozzles for distributing water under high pressure for cooling inlet air, duct isolation systems comprising flap and guillotine type isolators, louvre dampers and diverter dampers; accessories in the nature of component parts of gas-operated turbine power generators, namely, fluid systems comprising bases, pumps, valves, fans piping, and controls; accessories in the nature of component parts of internal combustion engines for power generation, namely, fluid systems comprising bases, pumps, valves, fans piping, and controls; ignition exciters for turbine engines; parts of vibrating machines, namely, directional exciters, and circle exciters, magnetic exciters; component parts of gas turbine engines not for land vehicles, namely, collectors; gas turbine enclosures; machine parts, namely, vibration isolation dampers used in absorbing vibrating energy in machines; intake isolation dampers being structural parts for gas turbine engines not for land vehicle; inlet filter houses being structural parts for gas turbine engines not for land vehicles; filtration and pressurization skids being structural parts for gas turbine engines not for land vehicles; none of the foregoing for use in connection with aircraft or aerospace parts