What is meant by hermetically sealed?
What is meant by hermetically sealed?
A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers, but as technology advanced it applied to a larger category of materials, including rubber and plastics.
What does hermetically mean in English?
airtight manner
Definition of hermetically : in an airtight manner : so as to be completely airtight —usually used in the phrase hermetically sealed They have their digitally alarmed, healthfully air-conditioned, hermetically sealed knotty-pine wine cellars …—
Which is hermetic container?
Hermetic container means a container that is impervious to air or any other gas under the ordinary or customary conditions of handling, shipment, storage, and distribution.
What is hermetic encapsulation?
Sealing/Hermetic Encapsulation. Sealing/Hermetic Encapsulation. Sealing is the process of encapsulating a hermetic package, usually by capping or putting a lid over the base or body of the package. The method of sealing is generally dependent on the type of package.
Why is it called hermetically sealed?
As you may have figured out, origin of “hermetically” comes from the Latin form of Hermes’ name (‘Hermeticus’). The term “Hermetically Sealed” was then popularized by an invention called the Magdeburg Hemispheres, which used a vacuum to remain sealed no matter the force applied to take them apart.
What is hermetically sealed compressor?
Hermetic compressor: A hermetic or sealed compressor is one in which both compressor and motor are confined in a single outer welded steel shell. Hermetic compressors are ideal for small refrigeration systems, where continuous maintenance (replenishing refrigerant and oil charge etc) cannot be ensured.
When was hermetically sealed invented?
The expression “hermetically sealed” finds its roots in Hermes Trismegistus, a syncretism of the Greek god Hermes and the Egyptian god of wisdom, Thoth. Its origin can be traced back to about 300 AD.
How does a hermetic seal work?
Hermetic sealing is the process of creating a container of some sort that is airtight. That means that any material in the container, whether it’s a gas, liquid, or solid, will not leak from the container. Hermetic sealing is commonly used to encase electrical mechanisms, as well as to contain functional gases.
What is hermetic seal made from?
Hermetic sealing can be done with plastics, epoxy resins, glass, metals, ceramics and more. There are many ways to create a hermetic seal, and even more applications.
Where does hermetic seal come from?
How is hermetic sealing done?
What is the meaning of Hermetic philosophy?
Hermeticism, or Hermetism, is a label used to designate a philosophical system that is primarily based on the purported teachings of Hermes Trismegistus (a legendary Hellenistic combination of the Greek god Hermes and the Egyptian god Thoth ). These teachings are contained in the various writings attributed to Hermes (the Hermetica ),
What is the origin of the Hermetic texts?
In the 19th century, Walter Scott placed the date of the Hermetic texts shortly after 200 A.D., but W. Flinders Petrie placed their origin between 200 and 500 B.C. In 1945, Hermetic texts were found near Nag Hammadi. One of these texts had the form of a conversation between Hermes and Asclepius.
What is a phlebotomy tube used for in clinical chemistry?
Generally, phlebotomy tubes with gray stoppers are used to test glucose levels, lactate, bicarbonate and blood alcohol levels. In clinical chemistry, however, it is used for a wide range of specialized and routine procedures. These include tests for the following:
