Abstract: A lockable, reusable plug for hermetically-sealing an opening, such as an alcoholic beverage bottle consists of a threaded wing bolt with an opening therethrough and a threaded stem; a domed, shouldered cap having an axial bore, an elastomeric sealing gasket having an opening, and a base nut having a threaded axial bore for mating with the threaded stem. Positioning the gasket between the compression cap and compression base nut, the bolt is inserted through the assembly, making the plug ready for insertion into an opening to be sealed. A flange on the gasket and the cap support the plug on the rim of the opening to be sealed. Screwing the bolt further into the assembly urges the plates toward one another compressing and causing the gasket to extend radially outward creating the seal. Insert the shackle of padlock through opening of bolt, lock padlock, shoulders prevent removal of plug.

Abstract: A reusable, lockable, domed, hermetically sealing, flush-mount compression plug is locked with a removable rotatable locking compression key. Rotation of the compression key causes vertical compression and radial extension of the plug's sealing compression gasket causing pressure of the gasket against the inner walls of the opening preventing movement of the plug. Once the plug is locked in place, the key is removed making the plug un-lockable only to those who have the key and know how to remove the domed cap that is fitted onto the plug after the key is removed. Once the cap is in place, its flush mount design allows unimpeded placement of a man-hole cover. The dome shape of the cap assures that no moisture, liquids or foreign objects will collect on the surface of the cap. The plug has a “quad sealing assembly” comprised of four individual seals to provide hermetically sealing.

Abstract: A lockable, reusable plug for hermetically-sealing an opening, such as an alcoholic beverage bottle consists of a threaded wing bolt with an opening therethrough and a threaded stem; a domed, shouldered cap having an axial bore, an elastomeric sealing gasket having an opening, and a base nut having a threaded axial bore for mating with the threaded stem. Positioning the gasket between the compression cap and compression base nut, the bolt is inserted through the assembly, making the plug ready for insertion into an opening to be sealed. A flange on the gasket and the cap support the plug on the rim of the opening to be sealed. Screwing the bolt further into the assembly urges the plates toward one another compressing and causing the gasket to extend radially outward creating the seal. Insert the shackle of padlock through opening of bolt, lock padlock, shoulders prevent removal of plug.