contact cement can renew with acetone or MEK.
again, the can/tube closure is done thus
tube.....squeeze air ot rollup bottom squarely until bottom tube foldind dams against the remaining interior substance....that is oozing out the nozzle
for the oozing you have prepared a patch of grocery bar plastic, cleaned threads of nozzle and cap plus examening cap for washers, rings of dry substance...
squeeze oze of substance from nozzle by pushing on the bottom roll fold...you have a fold of rolled up bottom held against the substance bulge ...and COVER THE OOZE WITH PATCH THEN SCREW THE CAP ON TIGHT BUT DOAHN SPLIT THE CAP.
always keep caps in a cap bin. when the locktite cap blows away there's another in the bin.
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for the can clean threads, size patch n if necessary cut a small X in the middle for the cap brush n stalk.
test cap n threads
find the pipe wrench/channel locks
https://www.google.com/search?site=i...&q=channelocks
or large vise grips
cover opening with patch, or insert brush thru partch hole ....cover hole trying for a unfolded cover of threads from the patch ...
screw cap on ...and tighten slightly with the pliers.
remove cap ? with the pliers
IHS