Search results
Results from the WOW.Com Content Network
Jars of food items soon started appearing with a lid with a metal bubble in the center, commonly known as a "safety button", pulled down by vacuum in the top of the container, which—like the lid of a Mason jar—popped out if the jar had ever been opened and stayed flat if the jar was in pristine condition. These lids would also pop out if ...
A jar opener is a kitchen device which is used to open glass or plastic jars. A jar is sealed by either (a) a screw-off rubberised lid or (b) a lid placed on the opening of the jar with a rubber sealing-ring between. Screw-off lids are usually made of metal with a thin rubber sealing layer, whereas lift-off lids mostly consist of glass.
A water detector is an electronic device that is designed to detect the presence of water for purposes such as to provide an alert in time to allow the prevention of water leakage. A common design is a small cable or device that lies flat on a floor and relies on the electrical conductivity of water to decrease the resistance across two contacts.
The primary purpose of leak detection systems (LDS) is to help pipeline controllers to detect and localize leaks. LDS provide alarms and display other related data to the pipeline controllers to assist decision-making. Pipeline leak detection systems can also enhance productivity and system reliability thanks to reduced downtime and inspection ...
In the course of sealing castings against porosity, the parts would be processed through the following four stations: Impregnation Chamber: The operator would seal the chamber and draw a vacuum. This would remove air in the porosity and leak path in the casting wall. Parts would then be covered with sealant, and positive pressure applied.
Seal types: Induction sealing or cap sealing; Adhesive, sealant; Bodok seal, a specialized gas sealing washer for medical applications; Bonded seal, also known as Dowty seal or Dowty washer. A type of washer with integral gasket, widely used to provide a seal at the entry point of a screw or bolt [2] [3]
The dangers of a can that is not hermetically sealed are contamination by foreign objects (bacteria or fungicide sprays), or that the can could leak or spoil. One important part is the seamer setup. This process is usually performed by an experienced technician. among the parts that need setup are seamer rolls and chucks which have to be set in ...
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 metals , rubber , and plastics .