{TAIL ~ A portion} of the cap defines a large cylindrical cavity having a channel formed therein which is positioned so that an O ring provides a substantially water tight seal when the filter cartridge is in an operative position in {HEAD ~ a manifold} 
{ TAIL ~ A portion } of the cap defines a large cylindrical cavity having a channel formed therein which is positioned so that an O ring provides a substantially water tight seal when the filter cartridge is in an operative position in { HEAD ~ a manifold }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD