I just bought a Grohe Relaxa shower head model 28178 from ebay, but when the shower head is connected to the shower hose water is coming out where the two parts meet, there is a plastic piece which pushes inside the head with a rubber o ring could this need replaced.
look at picture and link please
http://www.mygrohe.de/m/22_27472/pa...type=exp&product=28178000&selector=1991-05-01
look at picture and link please
http://www.mygrohe.de/m/22_27472/pa...type=exp&product=28178000&selector=1991-05-01