Heat seals are used whenever you need to fuse thermoplastic in order to prevent air or water from entering a package. They are also used to seal those very hard to open, anti-theft packages used for small items.
Seals have good memories....... Watch your back!
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Yes, Teflon (polytetrafluoroethylene) has been used in space applications for its non-stick and heat-resistant properties. It has been used in spacecraft components, such as insulation, seals, and coatings, to help with reducing friction and heat.
seals were used for trading
The seals are mainly used for avoiding leakage.
Yes, they get energy in the form of heat from the sun.
Inconel alloys are very resistant to extreme temperatures. They are often used in gas turbine blades, turbocharger rotors and seals and heat exchange tubing.
Paraffin is a poor conductor of electricity and heat, making it an insulator. It is commonly used in candles and wax seals because of its insulating properties that make it suitable for trapping heat or preventing electrical flow.
The Harp seals use it for insulation from the cold.
Seals are mostly found in the arctic.
For example, the people caught seals not only for their meat but also or their, skins, which were made into clothes, and tents. Oil made from seal blubber, or fat, was used to light and heat houses. People chewed on seal blubber to prevent hunger.... :) Hope this helped! :D
Some seals were used as name tags, and guards at city gates would not let people in unless they had one. Other Harappan seals were used to stamp the word 'namana' (greetings) on lettterhead. Another sort of stamp seal was used in freightyards and warehouses to stamp addresses on cargo, these seals had names of towns, rivers and countries on them. Visit 'Indus Script Dictionary' on Facebook to see many photos of Harappan seals.