Abstract: The invention relates to a pressure fluid coupling and in particular a high pressure hydraulic coupling. The coupling comprises two hollow flanged members, one of which carries a spigot having an O-ring near its end. The spigot is inserted into the bore of the other member and when it homes, the front faces of the flanges will abut. A resilient clip clips over the flanges to hold the coupling members together. Both coupling members may however be female members and a coupling device having "O"-rings near its ends may be inserted into the bores of coupling members.