Coupling e.g. for turbine engine fuel pipe and injector has ring seals between coupling nut and inner components

摘要

The coupling, e.g. for a turbine engine fuel pipe (32) and an injector (18), consisting of a nut (34) on one component engaging with a threaded surface (36) on the other to form a seal between meeting surfaces, has a second seal provided by two ring seals (60) located in grooves (58) between cylindrical surfaces (52, 54, 56) of the two components. The threaded surfaces can be located at the end or in the middle of the two components.