A stopper is a cylindrical or conical closure used to seal a container, such as a bottle, tube or barrel. Unlike a lid or bottle cap, which encloses a container from the outside without displacing the inner volume, a bung is partially or wholly inserted inside the container to act as a seal. Synonyms are bung and cork. A bung can be defined as "a plug or closure used to close an opening in a drum or barrel. It is called a plug when referring to a steel drum closure."[1]
A jug with a cork stopperBung in the bunghole of a wine barrelCork stoppers from wine bottles
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.
A common every-day example of a stopper is the cork of a wine bottle. When used to seal the bungholes of barrels, the stopper is called a bung. Other bungs, particularly those used in chemical barrels, may be made of metal and be screwed into place via threading.
Ground glass joint (or ground glass 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 and wanted to collect the water vapor, one could seal the test tube with a stopper with holes in it. With tubing inserted into the hole(s), when the tube is heated, 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, would be airtight.
In chemistry, bungs made of hardened rubber are frequently used in small-scale experimental set-ups involving non-corrosive gases. 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 sealed so that liquids or gases cannot escape (or enter).
For applications that place higher demands on the bung in terms of temperature and mechanical stability or solvent resistance, standardized glass stoppers and connectors are preferred.
Wikimedia Commons has media related to Stoppers (container components).
^Soroka, W. Illustrated Glossary of Packaging Terminology (Second ed.). Institute of Packaging Professionals.
^Haigh, Kenneth Richardson, Cableships and Submarine Cables, pp. 26-27, Adlard Coles, 1968 OCLC 497380538.
Yam, K.L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009, ISBN978-0-470-08704-6
Soroka, W, Illustrated Glossary of Packaging Terminology Institute of Packaging Professionals, [1]
November 13, 2023
stopper, plug, stopper, cylindrical, conical, closure, used, seal, container, such, bottle, tube, barrel, unlike, bottle, which, encloses, container, from, outside, without, displacing, inner, volume, bung, partially, wholly, inserted, inside, container, seal,. A stopper is a cylindrical or conical closure used to seal a container such as a bottle tube or barrel Unlike a lid or bottle cap which encloses a container from the outside without displacing the inner volume a bung is partially or wholly inserted inside the container to act as a seal Synonyms are bung and cork A bung can be defined as a plug or closure used to close an opening in a drum or barrel It is called a plug when referring to a steel drum closure 1 A jug with a cork stopperBung in the bunghole of a wine barrelCork stoppers from wine bottles Bung redirects here For other uses see Bung disambiguation 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 A common every day example of a stopper is the cork of a wine bottle When used to seal the bungholes of barrels the stopper is called a bung Other bungs particularly those used in chemical barrels may be made of metal and be screwed into place via threading Contents 1 Ground glass joint 2 Rubber bungs 3 See also 4 ReferencesGround glass joint editMain article Ground glass joint nbsp Ground glass stoppersGround glass joint or ground glass 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 and wanted to collect the water vapor one could seal the test tube with a stopper with holes in it With tubing inserted into the hole s when the tube is heated 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 would be airtight Rubber bungs editMain article Laboratory rubber stopper In chemistry bungs made of hardened rubber are frequently used in small scale experimental set ups involving non corrosive gases 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 sealed so that liquids or gases cannot escape or enter For applications that place higher demands on the bung in terms of temperature and mechanical stability or solvent resistance standardized glass stoppers and connectors are preferred Bottle stoppers made from gutta percha a natural rubber that is both chemically resistant and thermoplastic were the first product of the Gutta Percha Company better known for making submarine telegraph cables 2 See also editBunghole Cork borer Closure container Hutchinson Patent StopperReferences edit nbsp Wikimedia Commons has media related to Stoppers container components Soroka W Illustrated Glossary of Packaging Terminology Second ed Institute of Packaging Professionals Haigh Kenneth Richardson Cableships and Submarine Cables pp 26 27 Adlard Coles 1968 OCLC 497380538 Yam K L Encyclopedia of Packaging Technology John Wiley amp Sons 2009 ISBN 978 0 470 08704 6 Soroka W Illustrated Glossary of Packaging Terminology Institute of Packaging Professionals 1 Retrieved from https en wikipedia org w index php title Stopper plug amp oldid 1173701710, wikipedia, wiki, book, books, library,
