pressure differential between the container inside and outside will be removed by slow venting finally the second lug 22 will contact the latch dog 12 causing the latch 11 to be moved from the position shown in fig3 a to the position shown in fig3 b the owner can then move the security closure 1 along the container central axis 6 to complete disengagement assuring that the same combination will not permit access to all containers is taken care of during the manufacture of the security closure the dials are identical in overall design however the dials will each be manufactured with as many angularly positioned dial keyways as there are symbols on the periphery of the dials a random combination for opening each lock is provided by randomly picking the dials for each lock a lock with 10 symbols on its periphery and three such dials in each lock will produce 999 permutations of combinations to lock the locks referring now to fig5 a b as seen the discontinuous elongated protrusion 13 engages the dial keyway 19 when the security closure 1 is unlocked in addition the rim nub 31 which is located on the circular rim 30 ramps the second lug 22 as the security closure 1 twists around the container central axis 6 of the.