{HEAD ~ A press} is mounted to the base to selectively press {TAIL ~ the press block} against the gasket and hold it in position 
{ HEAD ~ A press } is mounted to the base to selectively press { TAIL ~ the press block } against the gasket and hold it in position
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH