A novel earplug is disclosed. The earplug comprises an elastomeric insert and a metal casing. The elastomeric insert is substantially cylindrical in shape and has a first end and a second end. The metal casing is substantially cylindrical in shape and comprises a circular outer wall, an internal cavity disposed within the circular outer wall, and a first end and a second end disposed the opposite end of the first end. The first end has a substantially flat base covering the first end and the second end has an opening into the internal cavity. The first end of the elastomeric insert is disposed through the second end of the metal casing and is secured with an adhesive within the internal cavity of the metal casing. The second end of the elastomeric insert extends outward from the metal casing.
