Stopper (plug)

Jug_with_cork_stopper

Stopper (plug)

A stopper, also known as a plug, is a device used to block the opening of a container or hole. Stoppers are commonly used in various applications, including laboratory glassware, plumbing, and wine and beer bottles. They are typically made from materials such as rubber, cork, silicone, or plastic.

Types of Stoppers

Stoppers come in various types and sizes, each designed for specific uses:

• Cork Stoppers: Made from the bark of the cork oak tree, these stoppers are commonly used in wine bottles and other beverage containers. Cork stoppers are valued for their ability to create an airtight seal while being easy to remove.

• Rubber Stoppers: These are often used in laboratory settings to seal flasks, test tubes, and other glassware. Rubber stoppers are durable and can withstand various chemicals and temperatures.

• Silicone Stoppers: Similar to rubber stoppers, silicone stoppers are used in both laboratory and household applications. They are known for their flexibility and resistance to extreme temperatures.

• Plastic Stoppers: Commonly used in plumbing and industrial applications, plastic stoppers are durable and resistant to corrosion.

Applications

Stoppers are used in a wide range of applications:

• Laboratory Use: In chemistry and biology laboratories, stoppers are essential for sealing test tubes, flasks, and other glassware to prevent contamination and spillage.

• Beverage Industry: Stoppers are used to seal wine, beer, and other beverage bottles to preserve the contents and prevent spoilage.

• Plumbing: In plumbing, stoppers are used to block pipes and drains temporarily during maintenance or repairs.

• Household Use: Stoppers are also used in everyday household items such as bathtubs, sinks, and bottles.

History

The use of stoppers dates back to ancient times when natural materials like wood and cork were used to seal containers. The development of synthetic materials such as rubber and plastic in the 19th and 20th centuries expanded the range of applications and improved the effectiveness of stoppers.

See Also

• Cork (material)
• Laboratory glassware
• Plumbing
• Wine bottle
• Beer bottle