We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Yellow bullet-shaped foam ear plugs on blue vinyl cord, bulk pack of 200 pairs

3M

3M 311-4109 Ear Plugs Corded Metal Detectable 32 dB 200 Pairs

SKU CH-6Z8V-W875J MPN 311-4109

Corded polyurethane ear plugs with a 32 dB noise reduction rating, metal detectable for food safety, supplied as 200 pairs in bulk

  • TypeHearing Protection
  • MaterialPolyurethane
  • Corded design prevents loss in busy workplaces
  • Metal detectable for food-industry safety compliance
  • 32 dB NRR reduces hazardous noise exposure
  • Soft foam bullets fit comfortably for extended wear
  • 200 pairs per bulk bag supplies large teams

Essential Hearing Protection

These 3M 311-4109 ear plugs deliver a Noise Reduction Rating of 32 dB for reliable hearing protection. The corded design keeps the pair together and prevents loss during use. Metal detectable construction supports safety compliance in food processing and manufacturing environments. Supplied as 200 pairs in a bulk bag for convenient dispensing.

Suited for Industrial Compliance

Workers in food production, pharmaceuticals and general manufacturing benefit from the metal detectable feature and high attenuation. The reusable polyurethane foam and vinyl cord withstand daily wear in demanding settings. Buyers needing individually wrapped pairs for hygiene kits or a lower NRR for moderate noise should consider alternative options.

Bulk Capacity for Team Supply

Each package provides 200 pairs, offering extended supply for shift rotations and large crews. The universal medium bullet shape fits most adult ear canals without adjustment. Standards compliance follows ANSI S3.19-1974 testing protocols. Very high noise environments exceeding the rated attenuation will require dual protection or engineering controls.

Highlights

  • Corded design prevents loss in busy workplaces
  • Metal detectable for food-industry safety compliance
  • 32 dB NRR reduces hazardous noise exposure
  • Soft foam bullets fit comfortably for extended wear
  • 200 pairs per bulk bag supplies large teams

Specifications

Brand3M
Model311-4109
TypeHearing Protection
MaterialPolyurethane

Questions about this item

Do I need to wear a headband or helmet for the corded 32 dB plugs to stay in place?

No extra headgear is required; the vinyl cord simply hangs around the neck when the plugs are removed.

Will the blue vinyl band and yellow foam plugs interfere with my existing safety glasses or hard hat?

The low-profile bullet shape and flexible cord sit clear of most eyewear and helmet suspension systems.

How can I confirm the 32 dB attenuation is still effective after repeated use?

Inspect the foam for tears or permanent compression and verify the metal-detectable element remains intact; replace the pair if either shows wear.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.