Sealing
1. Sealing is the action or process of fastening or closing something securely.
2. Sealing is the application of a non-porous coating to a surface to make it impervious.
Sealing is used to fasten or seal two surfaces together, usually producing a smooth bond. This joining technique involves glues, epoxies or various plastic agents that bond by evaporation of a solvent or by curing a bonding agent with heat, pressure or time.
Sealants are most commonly used to:
• Exclude dust, dirt, moisture and chemicals
• Contain a liquid or gas
• Coat and protect a surface
• Improve appearance
• Perform a joining function
For example, sealing is applied to concrete to protect it from surface damage, staining and corrosion. It either blocks the pores in the concrete to reduce absorption of water and salts or forms an impermeable layer which prevents such materials from passing through. Sealed concrete also resists chemicals and corrosion, making it useful for kitchens and scientific laboratories. Unsealed concrete, however, tends to break down more quickly, so it may need to be replaced more often.
Induction sealing is a process that can create a hermetically sealed container without any physical contact taking place, which typically involves liners that are composed of foil and other materials. This procedure is used to seal a wide range of products, including medications, food products, motor oil and others. With processes such as conductive sealing, physical contact is required between a metal plate and the liner, which can slow down processing.
Англійський словник Коллінза, https://www.collinsdictionary.com/
Google’s English dictionary by Oxford Languages https://languages.oup.com/google-dictionary-en/
CorrosionPedia Dictionary https://www.corrosionpedia.com/definition/