Custom Earmold Laboratories:

Accoustic trauma and sustained exposure to noise are serious causes of hearing loss. Loud sounds can and do damage hearing. The list below gives examples for your reference.

dB Level Examples

30 Quiet library, soft whispers

40 Living room, refrigerator, bedroom away from traffic

50 Light traffic, normal conversation, quiet office

60 Air conditioner at 20 feet, sewing machine

70 Vacuum cleaner, hair dryer, noisy restaurant

80 Average city traffic, garbage disposals, alarm clock at two feet

The following noises can be dangerous under constant exposure

90 Subway, motorcycle, truck traffic, lawn mower

100 Garbage truck, chain saw, pneumatic drill

120 Rock band concert in front of speakers, thunderclap

140 Gunshot blast, jet plane

180 Rocket launching pad

Since hearing damage is often undetected until it is too late, Custom Earmold Laboratories recommends avoiding prolonged exposure to excessive noise and offers ear plugs as a solution. Available in solid and vented configurations, they are made from soft materials and have special accoustical attenuation properties as shown in the graph above.

Custom Earmold Laboratories materials for hearing protection devices are as follows:

Ear Plugs are available with or without handles, detachable strings. In the ultra-sil materials, ear plugs are available in vibrant multi colors and swirls.

Ear plugs are also available with acoustic filters. The chart to the right illustrates the wide range of attenuation available with solid plugs and plugs with filters.