NRR 27 Ear Plugs — All 23 Rated Exactly 27

What are the best NRR 27 ear plugs?

Short answer: NRR 27 is the level where you stay well protected but keep more awareness of speech and alarms — and it is where washable reusable flanged plugs dominate. The Moldex 6405 Rockets Corded is the popular reusable standard, the 3M E-A-R UltraFit 340-4002 is the classic triple-flange, and the Howard Leight AirSoft R-01521 is the budget pick.

NRR 27 ear plugs: what is in this collection

Every one of the 23 NRR 27 ear plugs in this collection is rated at exactly 27 — we checked all 23 listings, and none is rated 26 or 28 and shelved here for convenience. Fourteen are washable reusable flanged plugs, seventeen come corded, and two are metal-detectable for food and pharmaceutical lines. NRR 27 plugs hit the practical middle of hearing protection: enough attenuation for most industrial noise, but not so much that workers lose touch with conversation, backup alarms, and machine cues. Unlike the foam-only higher ratings, NRR 27 is where washable reusable flanged plugs are most common, so this collection skews toward pre-molded designs you clean and reuse. Need more protection? Step up to NRR 30 ear plugs. Want maximum awareness? Step down to NRR 25 ear plugs. The category lives under hearing protection.

Editor's pick — Moldex 6405 Rockets Corded
The reusable flanged plug crews actually keep using: NRR 27, washable, push-to-fit (no rolling), with a cord and carry case. Strong protection with better communication than foam, at a low cost over its service life. (We earn an Amazon commission on the Amazon link below; it never affects ranking.)
Read the full Moldex 6405 Rockets review →

VIEW MOLDEX 6405 ROCKETS → CHECK PRICE ON AMAZON →

What this collection covers

• Reusable flanged NRR 27 — washable push-to-fit plugs: Moldex 6400 Rockets Uncorded (review), 3M E-A-R UltraFit 340-4002.
• Extra-soft reusable — for sensitive canals: Moldex 6450 Jetz.
• Budget flanged — lowest entry cost: Howard Leight AirSoft R-01521.
• Detectable reusable — for food and pharma; see metal-detectable ear plugs. The full washable range is in reusable ear plugs.

NRR 27 ear plug comparison

Shop NRR 27 ear plugs on Amazon → Moldex Rockets 3M UltraFit Howard Leight AirSoft

Which NRR 27 ear plug should you buy?

• Buy the Moldex 6405 Rockets Corded for the everyday washable plug with a cord and case.
• Buy the Moldex 6400 Rockets Uncorded if you prefer no cord.
• Buy the 3M E-A-R UltraFit 340-4002 for the classic triple-flange seal many workers know.
• Buy the Moldex 6450 Jetz for an extra-soft flange on sensitive ears.
• Buy the Howard Leight AirSoft R-01521 for the lowest entry cost into reusable.

How to choose NRR 27 ear plugs

Protection vs communication

NRR 27 is the level most safety managers pick when workers also need to hear instructions, radios, or alarms. It still protects against typical industrial noise but preserves more situational awareness than NRR 30–33. Match the rating to your measured exposure — see the NRR explainer.

Why reusable flanged plugs dominate NRR 27

Pre-molded flanged plugs (Rockets, UltraFit) seal without rolling and are washable, which lands them around NRR 25–27. They cost more upfront than foam but far less per use when one worker wears them daily — see the full reusable ear plugs range.

What NRR 27 actually delivers on the floor

Not 27 dB. NRR is measured in a laboratory under ANSI S3.19 with trained fitting, so every real program derates it. OSHA 29 CFR 1910.95 Appendix B subtracts 7 dB before applying the rating to an A-weighted exposure, and OSHA guidance endorses halving that result as a conservative single-protector estimate: (27 − 7) ÷ 2 = 10 dB. NIOSH takes a different route, derating earplugs by 50 percent outright. Worked through: in a 95 dBA area, the conservative OSHA estimate leaves about 85 dBA — at the action level that triggers a hearing conservation program, not comfortably below it. In a 100 dBA area an NRR 27 plug alone does not get you under 90 dBA, and you are looking at dual protection or an engineering control. Run your own exposure through the Hearing Protection NRR Calculator before committing a plug to a written program.

Corded vs uncorded

Corded reusable plugs are easy to keep around the neck between tasks; uncorded suit continuous wear. Both are available at NRR 27.

Cleaning and replacement

Wash flanged plugs with mild soap and water, dry fully, and replace when the flanges stiffen, tear, or stop sealing. Hygiene is the main reason to retire a reusable plug.

Regulatory context

U.S. workplace noise is governed by OSHA 29 CFR 1910.95: a 90 dBA permissible exposure limit (8-hour TWA) and an 85 dBA action level that triggers a hearing conservation program. NRR 27 plugs are a balanced control for moderate-to-high noise — see our guide to OSHA 29 CFR 1910.95 hearing conservation. Every one of the 23 plugs here publishes a U.S.-required EPA/ANSI Noise Reduction Rating in its listing, and every one of them reads 27 — verified across all 23, so you can compare within this page without chasing datasheets.

Related categories

Need a different rating? See NRR 30 (more protection) or NRR 25 (more awareness), browse all washable reusable ear plugs, or add ear muffs for dual protection. The full category lives under hearing protection.

Frequently asked questions

What does NRR 27 mean?

NRR 27 is an EPA/ANSI Noise Reduction Rating of 27 decibels — balanced protection that preserves more awareness than the higher ratings. Real-world protection is lower after derating.

Is NRR 27 enough hearing protection?

For moderate-to-high industrial noise, yes — and it keeps workers more aware of speech and alarms. For the loudest environments, step up to NRR 30.

Why are most NRR 27 plugs reusable?

Pre-molded flanged plugs seal around NRR 25–27 and are designed to be washed and reused; foam plugs rate higher. That is why this rating skews reusable.

NRR 27 vs NRR 30 — which should I pick?

Pick NRR 27 when communication matters; pick NRR 30 when noise is higher and awareness is less critical.

How much noise does NRR 27 block?

Not the full 27 dB. A common single-protector estimate is (27 − 7) ÷ 2 = 10 dB of real-world reduction.

How do I clean reusable NRR 27 ear plugs?

Wash with mild soap and warm water, rinse, and dry fully before reuse. Replace when the flanges stiffen, tear, or stop sealing.

Are NRR 27 ear plugs washable?

The flanged plugs here are, yes — that is the main advantage of reusable plugs at this rating. See reusable ear plugs.

Do NRR 27 ear plugs come corded?

Yes — the Moldex 6405 Rockets Corded and others in corded ear plugs.

Are there metal-detectable NRR 27 reusable plugs?

Yes, for food and pharma — see the metal-detectable ear plugs range.

What is the best NRR 27 plug for sensitive ears?

The extra-soft Moldex 6450 Jetz uses a softer flange material for comfort.

Does OSHA require a specific NRR?

No. OSHA requires protection that reduces exposure below 90 dBA (TWA); the NRR you need depends on your noise level. See the hearing conservation guide.

Is every plug in this collection really NRR 27?

Yes — all 23, checked listing by listing. Rating facets are easy to pad with near-misses, so it is worth saying plainly: nothing here is rated 26 or 28. If you need those, see NRR 25 for more awareness or NRR 30 for more attenuation.

What is the difference between NRR 27 and 27 dB of protection?

They are not the same thing, and conflating them is the commonest hearing-protection mistake. NRR 27 is a laboratory rating; 27 dB of real-world reduction is not what you get. Apply the OSHA correction and the conservative halving and an NRR 27 plug is worth roughly 10 dB in practice.

Catalogs spell the same rating several ways and none of them changes the number: nrr 27 db ear plugs, 27db ear plugs, a single nrr 27 earplug sold as one pair, or the reversed 27 nrr. All of them mean the same EPA/ANSI S3.19 figure, and all of them need the same derating before you use them in a compliance calculation.

Is NRR 27 hearing protection enough for a 100 dBA area?

On its own, no. Using the conservative OSHA estimate of about 10 dB, a 100 dBA exposure lands near 90 dBA — at the permissible exposure limit rather than under it, with no margin for a poor fit. For sustained exposure above about 95 dBA, move to NRR 33 ear plugs, or use plugs plus ear muffs together and have the combined attenuation calculated properly rather than added up.

Which NRR 27 plugs work on a food production line?

Two of the 23 are metal-detectable: the Moldex 6436 Alphas and the Moldex Rockets 6415, both corded and reusable. That combination is what food and pharmaceutical lines usually specify — the cord keeps the plug with the worker, and detectability catches it if it does get loose. See metal detectable ear plugs for the full detectable range across all ratings.

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