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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. Hermetic seal - Wikipedia

   en.wikipedia.org/wiki/Hermetic_seal

   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.

4. USS Arizona salvaged artifacts - Wikipedia

   en.wikipedia.org/wiki/USS_Arizona_salvaged_artifacts

   Parts of the ship's superstructure 1: USS Arizona Flag Arizona State Capitol Museum U.S. flag that flew on the battleship when it sank 1: USS Arizona Silver Service Arizona State Capitol Museum 59 pieces of the ship's silver service donated to the men of the USS Arizona by the citizens of Arizona in 1919 1: USS Arizona Silver Service

5. Glass-ceramic-to-metal seals - Wikipedia

   en.wikipedia.org/wiki/Glass-ceramic-to-metal_seals

   The white opaque "glue" between the panel and the funnel of a colour TV cathode ray tube is a devitrified solder glass based on the system PbO – ZnO – B 2 O 3.While this is a glass-ceramic-to-glass seal, the basic patent of S.A. Claypoole considers glass-ceramic-to-metal seals as well.

6. Harbor seal - Wikipedia

   en.wikipedia.org/wiki/Harbor_seal

   The harbor (or harbour) seal (Phoca vitulina), also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere. The most widely distributed species of pinniped (walruses, eared seals, and true seals), they are found in coastal waters of the northern Atlantic and Pacific oceans, Baltic ...

7. Natural rubber - Wikipedia

   en.wikipedia.org/wiki/Natural_rubber

   Torn latex rubber dry suit wrist seal. Natural rubber is reactive and vulnerable to oxidization, but it can be stabilized through a heating process called vulcanization. Vulcanization is a process by which the rubber is heated and sulfur, peroxide, or bisphenol are added to improve resistance and elasticity and to prevent it from oxidizing.