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About Ear Protection
Ear protection safety devices are designed to protect the ears from elevated decibel levels and/or debris. These devices are designed to protect the ears from increased decibel levels. Ear plugs are the most popular form of ear protection, and are usually used in conjunction with ear muffs and canal caps. There are several types of ear protection devices. Examples include expansion plugs, button plugs, porous plugs, and foam ear plugs. An expansion plug is expanding foam that seals the ears. A button plug allows the user to hear sound naturally and clearly, but at lower and safer sound level. A porous plug is made of porous foam and provides high quality protection from noise. A foam ear plug is a type of expansion plug that can be expanded just like an expansion plug to seal the ear canal. Other types of ear protection are commonly available.
Engineering Web: Ear Protection - Machine Design
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