Self-fitting hearing protector

摘要

A self-fitting earplug has a generally elongated, ovoid- or bullet-shaped mass of deformable putty-like polymer enclosed in an elastomeric or resilient envelope which urges the polymeric mass toward its original shape when deformed or elongated and inserted in the ear canal whereby the earplug conforms to the ear canal walls providing a close fit in the canal for attenuation of sound and sealing of the ear opening.