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A buttonhook is a tool used to facilitate the closing of buttoned shoes, gloves or other clothing. It consists of a hook fixed to a handle which may be simple or decorative as part of a dresser set or chatelaine. Sometimes they were given away as promotions with product advertising on the handle. To use, the hook end is inserted through the ...
Radial shaft seal of Romo washing machine pump. 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.
As a more rugged alternative to dress shoes, dress boots may be worn (though these can be more formal than shoes). Fashionable boots for women may exhibit all the variations seen in other fashion footwear: tapered or spike heels, platform soles, pointed toes, zipper closures and the like. The popularity of boots as fashion footwear ebbs and flows.
Shoes are also used as an item of decoration. The design of shoes has varied enormously through time and from culture to culture, with appearance originally being tied to function. Additionally, fashion has often dictated many design elements, such as whether shoes have very high heels or flat ones. Contemporary footwear varies widely in style ...
High-heeled shoes were worn by men and women courtiers until the French Revolution. When high heels came back in style in the late 1800s, they were worn only by women. [ 1 ] The stiletto heel came with the advent of technology using a supporting metal shaft or stem embedded into the heel, instead of wood or other, weaker materials that required ...
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In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this ...
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