This is achieved by using components that are subjected to pressure, pressing the elastically deformable sheet of metal against {HEAD ~ projections} that are located at {TAIL ~ a height} corresponding to approximately half way up the hub supports in the direction of the piston head  
This is achieved by using components that are subjected to pressure , pressing the elastically deformable sheet of metal against { HEAD ~ projections } that are located at { TAIL ~ a height } corresponding to approximately half way up the hub supports in the direction of the piston head
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH