metallic fuel line connectors and fuel line flanges for aircraft and spacecraft; and metal hose, tubing, ducting and bellows for aircraft and spacecraft, not for use in ventilation

fuel line temperature and pressure compensators for use in aircraft and spacecraft

fitted covers for keeping out dirt from holes on aircraft and spacecraft; and fitted covers for weapons launch points on aircraft and submarines

non-metal hose, tubing, ducting and bellows for aircraft and spacecraft, not for use in ventilation

non-metallic fuel line connectors and fuel line flanges for aircraft and spacecraft