A gasket 409 disposed between the tank and cap assemblies is thus compressed, sealing {HEAD ~ the contact} between {TAIL ~ the two assemblies} so that air cannot escape 
between
A gasket 409 disposed between the tank and cap assemblies is thus compressed , sealing { HEAD ~ the contact } between { TAIL ~ the two assemblies } so that air can not escape
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH