The present invention provides a retaining washer (10) for retaining threaded fasteners, such as bolts, that have been inadvertently loosened, in use. The invention finds particular application in gas turbine engines and in aircraft in general where wire l...

The cleaning device has apertures (51) coming out into the flow channel (2) upstream of the jet ring (4) to inject cleaning fluid (6) into the flow channel. There is a cavity (52) connected to these apertures to distribute the cleaning fluid uniformly with...

A coupling (10) used to transfer fluid between two conduits includes a seal arrangement that permits an inner sleeve (12) to move axially and angularly without fluid leaking from the coupling. The coupling also includes a pair of coupling members (14, 16) ...