Describir: Rubber in engineering practice

 _    _     _____     ______   __   __   _____       ___     _    _   
| |  | ||  |  ___||  /_   _//  \ \\/ // |  __ \\    / _ \\  | || | || 
| |/\| ||  | ||__      | ||     \ ` //  | |  \ ||  | / \ || | || | || 
|  /\  ||  | ||__     _| ||      | ||   | |__/ ||  | \_/ || | \\_/ || 
|_// \_||  |_____||  /__//       |_||   |_____//    \___//   \____//  
`-`   `-`  `-----`   `--`        `-`'    -----`     `---`     `---`   
                                                                      
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 | ||__   
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