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2. Suction cup - Wikipedia

   en.wikipedia.org/wiki/Suction_cup

   The working face of the suction cup is made of elastic, flexible material and has a curved surface. [3] When the center of the suction cup is pressed against a flat, non-porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup.

3. Self-sealing suction cup - Wikipedia

   en.wikipedia.org/wiki/Self-sealing_suction_cup

   The suction cup incorporates a mix of rubber and plastic components, where the cup lip, base, tube, springs, and plug are made out of soft rubber while the cup side, collar, hinges, and flange are made out of plastic. As part of its design, a central vacuum pump can be used to maximize the suction force of the suction cup. [1]

4. Cup holder - Wikipedia

   en.wikipedia.org/wiki/Cup_holder

   A cup holder is a device, such as a podstakannik (Russian) or zarf (Turkish), to hold a cup or other drinking vessel. It may be free standing to hold cups securely on a desk or other flat surface, or in a tree style to store sets of cups in kitchens. They may be built into automobiles or chairs, or fixed to the walls of airplanes, boats, buses ...

5. Plunger - Wikipedia

   en.wikipedia.org/wiki/Plunger

   For the common plunger, the cup is pushed down against the drain opening, either pressing hard into the drain to force air in or pushing down until the rubber cup is flattened. The cup is then pulled out, creating a vacuum to pull blockage material upward and dislodge waste or other material.

6. Büchner flask - Wikipedia

   en.wikipedia.org/wiki/Büchner_flask

   The thick wall of the Büchner flask provides it the strength to withstand the pressure difference while holding a vacuum inside. It is primarily used together with a Büchner funnel fitted through a drilled rubber bung or an elastomer adapter (a Büchner ring ) at the neck on top of the flask for the filtration of samples.

7. Vintage Depression Glass Worth Wallet-Shattering Prices - AOL

   www.aol.com/vintage-depression-glass-worth...

   Price on eBay: $400 MacBeth-Evans Petalware had a graceful, flower-like design that came in a variety of colors. Produced between 1930 and 1940, this Depression glass pattern features delicate ...