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Pair of yellow tapered foam earplugs with smooth finish

3M

3M 1100 Uncorded Foam Earplugs NRR 29 dB

SKU CH-HHV3-253NR MPN 1100

Soft, uncorded foam earplugs with a tapered shape provide an NRR of 29 dB and CSA Class AL rating

  • Product typeWorkbench Accessories
  • NRR 29 dB blocks hazardous noise
  • Soft hypoallergenic foam conforms to each ear
  • Tapered shape fits canal comfortably
  • Smooth dirt-resistant surface keeps plugs hygienic
  • Compatible with 3M E-A-Rfit validation system

Uncorded foam hearing protection

These uncorded foam earplugs are single-use hearing protectors designed for noisy workplaces. The tapered shape conforms to the ear canal for a secure fit and consistent attenuation. Soft, hypoallergenic foam reduces irritation during extended wear. A smooth, dirt-resistant surface supports hygiene in industrial environments.

Suited for general noise exposure.

Workers who need straightforward, disposable protection in steady-noise settings will find these plugs practical. The uncorded design suits tasks where cords could snag or where plugs are changed frequently. Buyers who require a tethered option to prevent loss should look at corded alternatives. Those needing higher attenuation than 29 dB must select a different rating.

Noise Reduction Rating of 29 dB

The NRR of 29 decibels is the key figure for matching these plugs to your noise environment. CSA Class AL certification confirms compliance with Canadian hearing-protection standards. Compatibility with the 3M E-A-Rfit Validation System allows fit-testing for documented protection levels. Verify that 29 dB meets your workplace requirements before purchase.

How it compares

Measured against everything we stock in Stockroom Supplies & Equipment, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 72% of the 352 comparable items (median $73.49).

Specifications

Product
Brand name3M
Product typeWorkbench Accessories
Size & build
Shipping weight0.32 kg
Package size211 × 211 × 201 mm

Questions about this item

Do I need to buy the 3M E-A-Rfit Validation System to use the 1100 earplugs?

No, the 1100 earplugs work independently for hearing protection. The E-A-Rfit system is only required if you want to validate the actual fit and attenuation achieved in your own ears.

Can I wear the 1100 earplugs together with my existing earmuffs for extra noise reduction?

Yes, you can wear these uncorded foam plugs under earmuffs for dual protection. The combined attenuation will be higher than either device alone, though not a simple sum of both ratings.

How do I know the 1100 earplugs are seated correctly after insertion?

Roll the plug into a tight cylinder, insert it deep into the ear canal, and hold it while the foam expands. A proper seal muffles your own voice and reduces ambient noise noticeably; for measurable verification use the 3M E-A-Rfit Validation System.

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