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Silicone grease. Silicone grease, sometimes called dielectric grease, is a waterproof grease made by combining a silicone oil with a thickener. Most commonly, the silicone oil is polydimethylsiloxane (PDMS) and the thickener is amorphous fumed silica. Using this formulation, silicone grease is a translucent white viscous paste, with exact ...
The liquid-ring pump compresses gas by rotating a vaned impeller located eccentrically within a cylindrical casing. Liquid (often water) is fed into the pump, and by centrifugal acceleration forms a moving cylindrical ring against the inside of the casing. This liquid ring creates a series of seals in the spaces between the impeller vanes ...
Silicone rubber. An uncured piece of liquid silicone rubber. Silicone rubber is an elastomer (rubber-like material) composed of silicone —itself a polymer —containing silicon together with carbon, hydrogen, and oxygen. Silicone rubbers are widely used in industry, and there are multiple formulations. Silicone rubbers are often one- or two ...
Closing up wounds typically calls for sutures or staples, but neither are able to create a complete seal. And when it comes to internal injuries that are harder to get to and wounds on organs that ...
[100]: 127, 130–2, 138, 146–7 Instructions on how to make condoms at home were distributed in the United States and Europe. [100]: 126, 136 Despite social and legal opposition, at the end of the 19th century the condom was the Western world's most popular birth control method. [100]: 173–4
Dental dam. Dental dam. A dental dam or rubber dam is a thin, 6-inch (150 mm) square sheet, usually latex or nitrile, used in dentistry to isolate the operative site (one or more teeth) from the rest of the mouth. Sometimes termed "Kofferdam" (from German ), it was designed in the United States in 1864 by Sanford Christie Barnum [ de]. [ 1]
Polydimethylsiloxane ( PDMS ), also known as dimethylpolysiloxane or dimethicone, is a silicone polymer with a wide variety of uses, from cosmetics to industrial lubrication and passive daytime radiative cooling. [ 1][ 2][ 3] It is particularly known for its unusual rheological (or flow) properties. PDMS is optically clear and, in general ...
Part 1: Principal McVicker attempts a radical solution to Beavis and Butt-Head's stupidity and continuous laughing in class: they cannot laugh at anything they hear for a week, or risk being expelled and sent to a different high school. Featured videos: Ween – "Push th' Little Daisies" Carmen Electra – "Everybody Get on Up"