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2. Glass-to-metal seal - Wikipedia

   en.wikipedia.org/wiki/Glass-to-metal_seal

   Uranium glass used as lead-in seals in a vacuum capacitor. Glass-to-metal seals are a type of mechanical seal which joins glass and metal surfaces. They are very important elements in the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass-encapsulated semiconductor diodes, reed switches, glass windows in metal cases, and metal or ceramic packages of ...

3. Seal (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Seal_(mechanical)

   Inflatable seal Seals that inflate and deflate in three basic directions of operation: the axial direction, the radial-in direction, and the radial-out direction. Each of these inflation directions has their own set of performance parameters for measurements such as the height of inflation and the center-line bend radius that the seal can ...

4. Aluminium - Wikipedia

   en.wikipedia.org/wiki/Aluminium

   Aluminium (or aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13. It has a density lower than that of other common metals , about one-third that of steel .

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6. Seven seals - Wikipedia

   en.wikipedia.org/wiki/Seven_seals

   Wax seals were typically placed across the opening of a scroll, [7] so that it was known to be authored by the proper person, when the document was opened in the presence of witnesses. [6] This type of "seal" is frequently used in a figurative sense, in the book of Revelation, [8] and only the Lamb is worthy to break off these seals. [6]

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8. List of automobiles known for negative reception - Wikipedia

   en.wikipedia.org/wiki/List_of_automobiles_known...

   Frame and mechanicals are largely last-gen Chevy Tahoe/GMC Yukon bits, only they carry more weight and complain more often." [ 161 ] Autoblog included it on its list of "The 20 Dumbest Cars of All Time", stating, "The Hummer H2 may have tried to appeal to outdoorsy adventure seekers, but what it attracted were mostly people who advocate for ...

9. Radial shaft seal - Wikipedia

   en.wikipedia.org/wiki/Radial_shaft_seal

   Radial shaft seals, also known as lip seals, are used to seal rotary elements, such as a shaft or rotating bore. Common examples include strut seals, hydraulic pump seals, axle seals, power steering seals, and valve stem seals.