The flexible members, in being attached to opposite sides of the hinge, also tend to provide {HEAD ~ an opening force} to {TAIL ~ the seal}, so that the seal will spring open if the stud is not securely engaged in the socket 
to
The flexible members , in being attached to opposite sides of the hinge , also tend to provide { HEAD ~ an opening force } to { TAIL ~ the seal } , so that the seal will spring open if the stud is not securely engaged in the socket
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH