02 Mar Hearing Protection Devices
Hearing Protection Devices Hearing protection devices (HPD) such as earmuffs and earplugs can be an effective measure to protect hearing in noisy work environments. However, hearing protection devices are only effective if they are properly sized and carefully fitted into or over the ear. The two common HPD categories are earplugs and earmuffs. There are several common types of hearing protection devices: Formable earplugs made of expandable foam. One size fits most people. Premolded earplugs made from flexible plastics. Often sold in different sizes, they should be selected to provide best fit for each ear. Semi-aural devices, or canal caps, consisting of...