Stopper (plug): Difference between revisions
Citation? "Over 80% of males understand what a "bung" is, in contrast to only 5% of females. Some authors have speculated that a fascination with trivial issues, unicorns and fashion may be to blame" |
No edit summary |
||
| Line 1: | Line 1: | ||
| ⚫ | |||
{{Merge | Bung| date=January 2010}} |
|||
{{otheruses}} |
|||
| ⚫ | |||
| ⚫ | |||
[[Image:Cork p1160013.jpg|thumb|A cork stopper]] |
|||
| ⚫ | |||
A '''stopper''' is a truncated conical piece of [[rubber]], [[Cork (material)|cork]], [[glass]], or [[plastic]] used to close off a [[glass]] tube, piece of [[laboratory glassware]], a [[wine]] [[bottle]] or [[barrel (storage)|barrel]] and other containers with orifices. |
|||
A '''rubber stopper''' is sometimes called a [[rubber bung]], and a cork stopper is called a '''[[Cork (material)|cork]]'''. |
|||
A '''bung''' is an apparatus used to [[Seal (mechanical)|seal]] a [[Packaging and labelling|container]], such as a [[bottle]], tube or [[barrel (storage)|barrel]]. Unlike a [[lid]] which encloses a container from the outside without displacing the inner [[volume]], a bung is partially inserted inside the container to act as a seal. The lids for safety overpacks for 55 gallon drums sometimes may have a bung built in<ref>http://www.westernsafety.com/enpaccorporation/enpacpage3.html</ref> for access of the contents of the container. These may be referred to as fuel bungs. |
|||
[[Ground glass joint|Ground glass stoppers]] and rubber stoppers are commonly used with laboratory glassware, mainly because of their nonreactivity. Some stoppers used in labs have holes in them to allow the insertion of glass or rubber tubing. This is often used when a reaction is taking place in the flask or test tube and the byproduct or result of the reaction is desired to be collected. For instance, if one were to boil water in a test tube in an attempt to collect the water vapor, one can seal the test tube with a stopper with holes in it. Upon inserting tubing into the hole(s) and exposing the tube to heat, the water vapor will rise through the hole, make its way through the tubing, and into the collection chamber of choice. The water vapor would not be able to escape into the air, because the stopper and the tubing, if set up correctly, should be airtight. |
|||
The most common every-day example of a bung is the [[stopper (plug)|stopper]] of a [[wine bottle]]. Other bungs, particularly those used in chemical barrels, may be made of metal and are screwed into place via threading. |
|||
==Rubber bungs== |
|||
In [[chemistry]], bungs are usually made of hardened rubber. Some chemistry bungs may also include one or more holes so a [[glass tube]] or [[laboratory funnel]] may be inserted through the bung and into the container or another piece of apparatus. The rubber bung may be used to seal a flask because the user may require the contents to be mixed via shaking the flask or may require that the contents be kept inside the flask and prevented from leaking out. In all cases, the bung keeps the experimentation environment completely sealed so that [[liquids]] or [[gases]] cannot escape. |
|||
Apart from self-made glassware, rubber bungs are rarely used now. They have been supplanted by [[laboratory glassware]] which come with standard [[ground glass joint]]s which allow the pieces to be fitted together easily. Ground glass joints are also much more resistant to solvents and chemicals used. |
|||
Plastic bungs are commonly used to stop the air leaking from the lower parts of an air-bed. This type of bung is commonly made in two parts; the plastic outer screw on cap and the inner rubber bung used to seal the hole. |
|||
==See also== |
|||
* [[Bunghole]] |
|||
==References== |
|||
{{Reflist}} |
|||
{{Laboratory equipment}} |
|||
{{DEFAULTSORT:Stopper (Plug)}} |
|||
[[Category:Laboratory equipment]] |
[[Category:Laboratory equipment]] |
||
[[Category:Wine packaging and storage]] |
|||
[[Category:Seals (mechanical)]] |
[[Category:Seals (mechanical)]] |
||
[[Category:Packaging]] |
|||
[[ |
[[ca:Tap de suro]] |
||
[[ |
[[de:Korken]] |
||
[[es:Tapón de corcho]] |
|||
[[fr:Bouchon à vin]] |
|||
[[gl:Rolla]] |
[[gl:Rolla]] |
||
[[nl:Kurk (stop)]] |
|||
[[new:बुङ]] |
[[new:बुङ]] |
||
[[pl:Korek]] |
|||
[[pt:Rolha]] |
|||
[[zh-yue:枳]] |
|||
Revision as of 09:58, 10 January 2010
 |
 |
A stopper is a truncated conical piece of rubber, cork, glass, or plastic used to close off a glass tube, piece of laboratory glassware, a wine bottle or barrel and other containers with orifices.
A rubber stopper is sometimes called a rubber bung, and a cork stopper is called a cork.
Ground glass stoppers and rubber stoppers are commonly used with laboratory glassware, mainly because of their nonreactivity. Some stoppers used in labs have holes in them to allow the insertion of glass or rubber tubing. This is often used when a reaction is taking place in the flask or test tube and the byproduct or result of the reaction is desired to be collected. For instance, if one were to boil water in a test tube in an attempt to collect the water vapor, one can seal the test tube with a stopper with holes in it. Upon inserting tubing into the hole(s) and exposing the tube to heat, the water vapor will rise through the hole, make its way through the tubing, and into the collection chamber of choice. The water vapor would not be able to escape into the air, because the stopper and the tubing, if set up correctly, should be airtight.