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Yellow foam earplugs on a cord in a poly bag

3M

3M E-A-R Classic Metal Detectable Corded Earplugs Yellow NRR 33 dB 200/Box 3114101

SKU CH-7SGW-DP353

Metal-detectable foam earplugs with 33 dB noise reduction, corded for security and sold 200 per box

  • TypeSwimming Earplugs
  • MaterialPolyfoam
  • ColorYellow
  • Color MappingYellow
  • AgeAll Ages
  • High noise reduction with 33 dB NRR rating
  • Metal detectable design prevents product contamination in food processing
  • Flame resistant and water resistant foam for harsh environments
  • Corded with metal particles for easy detection and retrieval
  • Clean poly bag packaging protects 200 pairs per box

Metal-Detectable Earplugs for Food Processing

These corded foam earplugs are designed for workers in food processing and other contamination-sensitive industries. An implanted stainless steel ball bearing in each plug and metal particles in the cord make them detectable by most metal-sensing systems. The slow-recovery polyfoam is flame-resistant and water-resistant. They are supplied 200 pairs per box.

NRR 33 dB Attenuation Rating

The single specification that decides suitability is the Noise Reduction Rating of 33 dB. This figure represents the laboratory attenuation level used to estimate protection in high-noise environments such as construction, manufacturing, mining and oil and gas. Buyers needing a lower attenuation value for communication clarity or comfort should select a different model.

Sustained Wear in Wet and Hot Conditions

The foam material resists water absorption and maintains its recovery properties during extended shifts in humid or wet conditions. Flame resistance adds a safety margin where hot work or spark exposure occurs. The poly bag packaging keeps each pair clean until insertion. Workers requiring reusable or banded hearing protection will not be served by this disposable foam format.

Highlights

  • High noise reduction with 33 dB NRR rating
  • Metal detectable design prevents product contamination in food processing
  • Flame resistant and water resistant foam for harsh environments
  • Corded with metal particles for easy detection and retrieval
  • Clean poly bag packaging protects 200 pairs per box

Specifications

Brand3M
TypeSwimming Earplugs
MaterialPolyfoam
ColorYellow
Color MappingYellow
AgeAll Ages

Questions about this item

What does the NRR 33 dB rating mean when the earplugs are worn on the job?

The NRR 33 dB rating indicates the level of noise reduction the earplugs provide when fitted correctly, helping to lower hazardous noise exposure in environments like construction, manufacturing, mining, oil and gas, and transportation.

How does the metal-detectable design work with food-processing detection systems?

Each earplug contains an implanted stainless steel ball bearing and the cord includes metal particles, making the set recognizable by most metal-sensing systems used to prevent product contamination in food processing and similar industries.

What physical features let these earplugs fit and stay in place during a shift?

The slow-recovery polyfoam expands to seal the ear canal, while the corded design keeps the pair together and the poly bag stores each pair cleanly until use.

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