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2. Laboratory rubber stopper - Wikipedia

   en.wikipedia.org/wiki/Laboratory_rubber_stopper

   A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also for fermentation in winery. [ 1 ] [ 2 ] [ 3 ] Generally, in a laboratory , the sizes of rubber stoppers can be varied up to approximately 16 sizes and each of it is specific to certain type of ...

3. Cork borer - Wikipedia

   en.wikipedia.org/wiki/Cork_borer

   A cork borer, often used in a chemistry or biology laboratory, is a metal tool for cutting a hole in a cork or rubber stopper to insert glass tubing. [1] Cork borers usually come in a set of nested sizes along with a solid pin for pushing the removed cork (or rubber) out of the borer.

4. Plug (sanitation) - Wikipedia

   en.wikipedia.org/wiki/Plug_(sanitation)

   The insertion of a plug into a drainage outlet allows the container to be filled with water or other fluids. In contrast to screw on caps, plugs are pushed into the hole and are not put over the hole. Plugs are most commonly encountered in the bathroom or kitchen, for use in bathtubs, wash basins or sinks. [1]

5. Hermetic seal - Wikipedia

   en.wikipedia.org/wiki/Hermetic_seal

   A taper-joint stopper with PTFE Sealing Ring. Optical transparency of the narrow sealing ring pressured by glass joint (right). Glass taper joints can be sealed hermetically with PTFE sealing rings (high vacuum tight, air leakage rate 10 −6 mBar × L/sec and below), [ 6 ] o-rings (optionally encapsulated o-rings), or PTFE sleeves, [ 7 ...

6. Molly (fastener) - Wikipedia

   en.wikipedia.org/wiki/Molly_(fastener)

   Figure 1 of the original patent for the molly bolt, U.S. Patent No. 2,018,251. The molly bolt was patented in 1934 by George Frederick Croessant. [3] Although his patent acknowledges that expandable fasteners of this general kind were already known, Croessant's patent is intended to provide "an improved and adequate anchoring grip that may be retightened if necessary and that will permit ...

7. Stopper (plug) - Wikipedia

   en.wikipedia.org/wiki/Stopper_(plug)

   A glass stopper is often called a "ground glass joint" (or "joint taper"), and a cork stopper is called simply a "cork". Stoppers used for wine bottles are referred to as "corks", even when made from another material. [citation needed] A common every-day example of a stopper is the cork of a wine bottle.