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2. Hydraulic seal - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_seal

   A hydraulic seal is a relatively soft, non-metallic ring, captured in a groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion.

3. Caisson (lock gate) - Wikipedia

   en.wikipedia.org/wiki/Caisson_(lock_gate)

   To seal the gate the enlarged 'keel' of the ship caisson fits closely into a groove in the stonework of the lock opening. Flexible material is attached to this prominent keel and seals the water. Originally rope or oakum packing was used. Modern caissons use neoprene rubber. To make use of the pressure of water acting on the caisson, the seal ...

4. Hydrostatic seal - Wikipedia

   en.wikipedia.org/wiki/Hydrostatic_seal

   The second hydrostatic seal was an attempt to resolve first generation hydrostatic seal problems: erosion of seals, high pressure build up, and stagnant fluids. Second generation hydrostatic seals had a redesigned seal face; new face control grooves were added to help stabilize the seals while under extreme conditions.

5. What the visa feud says about the coming Trump administration

   www.aol.com/visa-feud-says-coming-trump...

   Donald Trump’s siding with Elon Musk over visas for high-tech workers is the most significant example yet of the president-elect favoring powerful elements in his new MAGA coalition over his ...

6. Jay-Z's lawyer says accuser's rape claim is 'provably ... - AOL

   www.aol.com/jay-zs-lawyer-says-accusers...

   Shawn "Jay-Z" Carter, left, and Sean "Diddy" Combs look on during the Sprite Slam Dunk Contest on All-Star Saturday Night, part of 2010 NBA All-Star Weekend at American Airlines Center on Feb. 13 ...

7. 11-Year-Old Girl Who Tried to Save Boy, 12, After He Fell ...

   www.aol.com/lifestyle/11-old-girl-tried-save...

   An 11-year-old girl who was taken to a hospital in critical condition after attempting to save her 12-year-old classmate's life when he fell through the surface of an icy upstate New York lake has ...