The cover has a corresponding diametrically extending sealing surface adapted to engage the sealing edge of {HEAD ~ the partition} to form {TAIL ~ a seal} to prevent mixing of the contents of the compartments when the cover is in place on the container 
to form
The cover has a corresponding diametrically extending sealing surface adapted to engage the sealing edge of { HEAD ~ the partition } to form { TAIL ~ a seal } to prevent mixing of the contents of the compartments when the cover is in place on the container
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH