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
Box of 200 pairs of orange and yellow foam ear plugs in plastic bags

3M

3M 312-1256 Ear Plugs 33dB Uncorded 200 Pairs

SKU CH-1B9P-4M5CH MPN 312-1256

Disposable foam ear plugs rated at 33 dB noise reduction, supplied as 200 wrapped pairs in a bulk box

  • TypeHearing Protection
  • 33 dB noise reduction protects hearing in loud environments
  • 200 pairs in bulk box supply extended workplace use
  • Roll-down foam inserts fit medium ear canals securely
  • Uncorded design avoids snagging on machinery or tools
  • ANSI/ASA S12.71-2018 tested for reliable attenuation performance

Hearing Protection 33 dB

These disposable foam ear plugs provide a Noise Reduction Rating of 33 dB for reliable hearing protection in loud environments. The bullet-shaped design uses a roll-down insertion method for a secure fit. Each bulk box contains 200 individually wrapped pairs packaged in plastic bags. The product meets ANSI/ASA S12.71-2018 standards.

Noise Reduction Rating 33 dB

The single specification that determines suitability is the 33 dB Noise Reduction Rating, which indicates the level of sound attenuation provided. This rating helps users assess whether the protection meets the requirements of their specific noise environment. The standard referenced is ANSI/ASA S12.71-2018.

Workers needing high attenuation

These suit workers in high-noise industrial or automotive settings who require maximum disposable foam protection and prefer an uncorded design. They are not suitable for users who need reusable plugs, corded retention, metal-detectable materials, or a different attenuation level for moderate noise.

Highlights

  • 33 dB noise reduction protects hearing in loud environments
  • 200 pairs in bulk box supply extended workplace use
  • Roll-down foam inserts fit medium ear canals securely
  • Uncorded design avoids snagging on machinery or tools
  • ANSI/ASA S12.71-2018 tested for reliable attenuation performance

Specifications

Brand3M
Model312-1256
TypeHearing Protection

Questions about this item

What does the 33 dB noise reduction rating mean when the plugs are worn in a noisy workplace?

The 33 dB rating is the laboratory Noise Reduction Rating measured under ANSI/ASA S12.71-2018; actual attenuation in a real machine environment depends on fit, wear time and the specific noise spectrum.

Which standard governs the 33 dB figure and what does it cap in practice?

The plugs are tested to ANSI/ASA S12.71-2018, which caps the reported attenuation at the laboratory NRR value; field performance will be lower if the roll-down insertion is not done correctly.

What packaging and physical format do the 200 pairs arrive in for storage and dispensing?

They come as 200 individually wrapped pairs in a bulk box, each pair sealed in a plastic bag, with orange/yellow bullet-shaped foam plugs sized medium and no cord attached.

Also in this aisle

People compared these

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