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A door draught excluder is placed at the bottom of a door to cover the gap located at the threshold. [1] [2] In the Victorian era these draught excluders would be sausage-shaped and made from fabric stuffed with sawdust. [3] Tubular sand-filled fabric draught excluders are commonly referred to as "door snakes" in Australia.
A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also for fermentation in winery. [ 1 ] [ 2 ] [ 3 ] Generally, in a laboratory , the sizes of rubber stoppers can be varied up to approximately 16 sizes and each of it is specific to certain type of ...
Diaphragm seals (also known as chemical seals or gauge guards) are also used to protect a process fluid from the pressure sensor. Examples of this use are: Sanitary processes (food, pharmaceuticals, etc.) where allowing process fluid to accumulate in the pressure port of the sensor would compromise the purity of the fluid (such as milk getting ...
Security seals can be split into two main groups: single-use and reusable. Single-use seals are typically made of plastic or metal, and the used material and production technology is the key to their security level. Reusable seals are usually electronic or mechanical rather than just made from plastic, and if purely plastic, only one part is ...
One commonly used film is a heat-shrink plastic which is attached to the window frame using double-sided pressure-sensitive tape. A hair dryer is used to remove creases and improve optical clarity. Reduced heat flow also helps prevent condensation [3] [4] [5] which is triggered when the temperature of the inside surface falls below the dew point.
Typically, the queen excluder is either a sheet of perforated metal or plastic or a wire grid in a frame with openings are limited to 0.163 inches (4.1 mm). Queen excluders can also be constructed of hardware cloth screen, of which #5 hardware cloth is often cited in references as sufficient for allowing worker bees to pass, but not queens.
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