Moldex 6940 Glide Uncorded Earplugs Twist-In NRR 30 100 Pairs Review (2026)
Moldex Glide Series — Twist-In NRR 30 Foam Earplug
Moldex 6940 Glide Uncorded Earplugs Twist-In NRR 30 100 Pairs Review (2026)
Most high-NRR foam earplugs share the same fatal flaw in dirty industrial environments: you have to roll them down with your fingers before insertion. For workers in machining, construction, or chemical processing — where hands are often contaminated with grease, cutting fluid, or dust — that single requirement turns a protective device into a hygiene liability. The Moldex 6940 Glide solves that problem with a twist-in insertion mechanism that requires zero compression. Grasp, twist, and the plug seats itself. No dirty-fingertip contact with the earplug body.
This review covers the Moldex 6940 Glide Uncorded 100-pair box in full. All performance claims are grounded in the product’s ANSI S3.19-certified NRR 30 rating and OSHA 29 CFR 1910.95 attenuation math — no manufacturer marketing copy substituted for verified data. If you want the short answer: at 4.8/5 from 94 verified buyers and one of the highest NRR ratings available in a disposable foam format, the 6940 is a legitimate daily-use choice for high-noise industrial environments.
Read on for a full breakdown of insertion mechanics, attenuation performance under OSHA’s required derating, how it stacks up against competing NRR 30 plugs, and who should — and should not — reach for this earplug over a banded or reusable alternative.
Verdict: Moldex 6940 Glide Uncorded Earplugs
4.8 / 5
Best for: High-noise industrial environments where hand contamination makes roll-down foam plugs impractical. NRR 30 is among the highest available in disposable foam. Twist-in mechanism is a genuine hygiene upgrade over conventional plugs.
Limitations: Disposable format means ongoing consumable cost; twist-in technique requires a brief learning curve; NRR 30 at OSHA 50% derating yields 11.5 dB effective protection, adequate for environments up to ~101.5 dBA TWA.
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Pros
- NRR 30 — top-tier attenuation for a disposable foam plug
- Twist-in insertion: no finger contact with foam body
- Latex-free and PVC-free polyurethane foam
- 4.8/5 verified buyer rating across 94 reviews
- 100-pair bulk box delivers low per-pair cost
- Available corded (6945) and camouflage variants (6941/6946)
- ANSI S3.19-certified NRR rating
Cons
- Twist-in technique requires brief training for new users
- Disposable only — generates daily waste vs. reusable banded options
- OSHA-derated effective protection is 11.5 dB, not 30 dB
- No reusable or washable format in the Glide line
- Higher per-pair cost than standard roll-down plugs
Who the Moldex 6940 Is For
The 6940 is the right earplug for workers who need maximum NRR protection but cannot or should not roll foam plugs with bare hands. That covers a wide swath of industrial roles:
- Machinists and CNC operators handling cutting fluids and lubricants throughout the shift
- Chemical plant and refinery workers where hand contamination risks transfer to the ear canal
- Construction laborers operating jackhammers, compactors, or heavy equipment above 100 dBA
- Automotive technicians in shops where grease on hands is constant
- Safety managers building a hearing conservation program that needs a high-NRR disposable option
If your environment consistently measures between 90 dBA and 101.5 dBA TWA and you change plugs once or twice per shift, the 6940 delivers both performance and hygiene compliance without requiring workers to carry a reusable plug case or manage cleaning. Workers who need hearing protection but operate in quieter zones (below 90 dBA) may be better served by a lower-NRR plug — over-attenuation can impair communication and situational awareness.
Key Strengths
NRR 30: Maximum-Tier Disposable Attenuation
NRR 30 places the Moldex 6940 at the upper bound of what disposable foam plugs achieve. Under ANSI S3.19-1974 — the test methodology Moldex used to certify this product — an NRR of 30 means the plug reduced noise by 30 dB under controlled laboratory conditions with trained subjects. The real-world number is lower. OSHA’s required 50% derating (29 CFR 1910.95, Appendix B) yields an effective attenuation of 11.5 dB [(30 - 7) / 2 = 11.5]. EPA’s more conservative 25% derating method yields approximately 17.25 dB. Either way, NRR 30 gives you the most headroom available in the disposable foam category. For a full breakdown of how NRR math works and how to pick the right NRR for your environment, see our NRR hearing protection guide.
The Twist-In Mechanism: A Real Hygiene Upgrade
Conventional foam earplugs require the user to compress the plug body between the fingers, hold it compressed, and insert it while it slowly re-expands. That process puts fingertips in direct contact with the foam that enters the ear canal. In environments where hand contamination is constant — oil, grit, solvents — that contact creates a dermal and hygiene concern. The 6940’s twist-in design sidesteps this entirely. The user grasps the plug at its outer rim and inserts with a slow rotating motion. The plug seats itself without compression. Workers who initially resist earplug compliance for hygiene reasons often accept the 6940 without pushback, which has real-world implications for hearing conservation program participation rates.
Latex-Free, PVC-Free Polyurethane Foam
The 6940 is made from polyurethane foam with no latex or PVC content. For environments requiring detailed material documentation — food processing, pharmaceutical manufacturing, certain government contracts — the clean material formulation simplifies compliance paperwork. Latex sensitivity is common enough in industrial workforces that latex-free specification in PPE is increasingly a baseline expectation rather than a premium feature. The 6940 meets that expectation without an upcharge. See our earplug collection for other latex-free options across NRR ranges.
100-Pair Bulk Packaging and Per-Pair Economics
At 100 pairs per box, the 6940 is sized for storeroom distribution rather than individual vending. A hearing conservation program distributing plugs at shift start benefits from the bulk format: fewer restocking events, simple pair-count tracking, and lower administrative overhead compared to individually packaged units. For employers running OSHA-compliant programs under 29 CFR 1910.95(d)(3), bulk stocking of a tested and NRR-documented plug supports audit readiness. The 100-pair format also allows safety managers to track consumption rates and confirm compliance with daily replacement requirements.
4.8/5 Verified Buyer Rating
Across 94 verified buyer reviews, the 6940 holds a 4.8/5 rating. While star ratings are not a substitute for NRR data, consistent high scores from actual purchasers — predominantly industrial buyers given the 100-pair bulk format — indicate the product delivers on its core promise in real-world conditions. The most commonly cited positives align with what the design intends: clean insertion, reliable fit, and comfort across multi-hour wear. Explore our best Moldex earplugs guide to see how the 6940 ranks within the brand’s full catalog.
Limitations to Know Before You Buy
Twist-In Technique Has a Learning Curve
The twist-in mechanism is an advantage once learned, but it is not self-evident to first-time users accustomed to roll-down plugs. Workers who insert it without the twisting motion — simply pushing straight in — may not achieve a proper seal and will see reduced attenuation. Safety managers deploying the 6940 for the first time should plan a brief insertion-technique demonstration. This is a one-time onboarding cost, not an ongoing issue, but it is worth factoring into rollout planning for large crews.
Disposable Format: Ongoing Consumable Cost and Waste
The 6940 is a single-use disposable. Workers changing plugs once per shift generate one pair of waste per shift per worker. For large crews or multi-shift operations, that adds up quickly both in cost and in landfill volume. If your operation is exploring reusable vs. disposable earplugs, banded or triple-flange reusable plugs can reduce per-shift cost substantially once you factor in washability and multi-use life. The 6940 wins on hygiene at insertion but loses on lifetime waste compared to a well-maintained reusable. Our best earplugs for work guide covers both categories in depth.
OSHA-Derated Effective Attenuation Is 11.5 dB — Not 30
OSHA mandates that employers derate all earplug NRR ratings by 50% when calculating worker exposure for compliance purposes (29 CFR 1910.95, Appendix B). At NRR 30, that yields 11.5 dB of credited protection. Workers in environments above ~101.5 dBA TWA will need dual protection (earplug + earmuff) to bring exposure below OSHA’s 90 dBA PEL. The 6940’s NRR 30 is the highest available for a foam disposable — this limitation applies to all foam plugs at maximum NRR, not a product deficiency, but an important compliance note. See our NRR guide for the full derating math and our hearing protection collection for compatible earmuffs.
No Reusable or Washable Glide Option
Moldex does not offer a reusable version of the Glide foam body. If the twist-in mechanism is the feature your workers want but you need a washable plug for cost reduction, you will need to look outside the Glide series. Triple-flange and banded plugs from Moldex and other manufacturers offer reusability without the roll-down requirement, though they use a different insertion mechanism and achieve different NRR ratings.
How the 6940 Compares: NRR 30 Foam Earplugs
| Earplug | NRR | Insertion | Material | Latex-Free | Format / Purchase |
|---|---|---|---|---|---|
| Moldex 6940 Glide | 30 dB | Twist-in (no compression) | PU foam, PVC-free | Yes | Disposable, 100-pair box WC Safety Amazon |
| Moldex 6800 Pura-Fit | 33 dB | Roll-down compression | PU foam | Yes | Disposable, bulk box Amazon |
| 3M E-A-R Classic | 29 dB | Roll-down compression | PU foam | No | Disposable, bulk box Amazon |
| Howard Leight MAX-1 | 33 dB | Roll-down compression | PU foam | Check SDS | Disposable, bulk box Amazon |
| Moldex 6645 Camoplugs | 33 dB | Roll-down compression | PU foam | Yes | Disposable, bulk box Amazon |
Bottom line: The 6940 trades two NRR points versus the Pura-Fit or MAX-1 for a hygiene-forward insertion mechanism. In clean-hands environments, standard roll-down plugs at NRR 33 may offer marginally more rated attenuation. In contaminated-hands environments, the 6940’s twist-in design is the more defensible compliance choice and the trade-off is worthwhile. Explore our full best Moldex earplugs guide for a brand-wide comparison.
Moldex Glide Series: Which Variant Is Right for You?
The Glide line offers four SKU variants sharing the same NRR 30 twist-in foam body. Choose by cord preference and color:
- 6940 — Uncorded, Standard (this review). Best for workers who prefer uncorded plugs or rotate plugs at each break.
- 6945 — Corded, Standard. Cord allows the plug to hang around the neck when not inserted, reducing loss. Preferred for intermittent-noise environments where plugs come in and out frequently.
- 6941 — Uncorded, Camouflage. Same NRR 30 performance in a camouflage colorway. Popular in outdoor, military, and hunting contexts where high-visibility gear is undesirable.
- 6946 — Corded, Camouflage. Cord plus camouflage for intermittent outdoor noise environments.
Decision rule:
- Continuous noise, clean handoffs → 6940 (this product)
- Intermittent noise, multiple insertions per shift → 6945 (corded)
- Outdoor or camo preference → 6941 or 6946
- Storeroom bulk dispensing → 6686 PlugStation jar (50-pair refill)
See our best foam earplugs guide and our best earplugs for work guide for cross-brand context.
See All Moldex Glide Variants on AmazonCompatible Accessories and Dispensing Options
The Moldex 6940 ecosystem extends beyond the 100-pair box:
- PlugStation 6883: A corded-format dispenser holding 150 pairs, designed for wall-mounting in high-traffic areas. Workers pull a plug pair from the dispenser without contaminating the remaining stock. Reduces per-pair handling and supports visual compliance monitoring in hearing conservation programs.
- 6686 Refill Jar (Standard) / 6687 Refill Jar (Camo): 50-pair bulk jar formats for refilling PlugStation dispensers or counter-top distribution points.
- Dual protection (earmuff plus earplug): For environments above ~101.5 dBA TWA, the 6940 pairs with any passive earmuff. See our full hearing protection collection for compatible earmuff options.
OSHA and ANSI Standards: What the Numbers Actually Mean
ANSI S3.19-1974: The laboratory test standard Moldex used to certify the NRR 30 rating. Subjects insert the plug at labeled depth under optimal conditions. Real-world attenuation is lower than the lab figure.
OSHA 29 CFR 1910.95: OSHA’s general industry noise standard. Requires employers to provide hearing protection when workers are exposed to 85 dBA or above as an 8-hour TWA. Mandates 50% derating of earplug NRR: effective protection = (NRR − 7) / 2 = (30 − 7) / 2 = 11.5 dB. The 6940’s effective protection is adequate for environments up to approximately 90 + 11.5 = 101.5 dBA TWA under OSHA accounting.
EPA Derating: The EPA’s more conservative 25% derating yields approximately 8.6 dB, giving adequate protection up to ~98.6 dBA by that method. OSHA’s 50% derating is the compliance-relevant number for U.S. general industry.
Employers running a formal hearing conservation program must document NRR, derating methodology, and individual fit when feasible. The 6940’s NRR 30 certification provides strong documentation for audit-ready HCP records.
Total Cost of Ownership: Disposable vs. Reusable
At 100 pairs per box, the 6940 is priced at a per-pair cost competitive with other premium disposable foam plugs. The disposable model works economically when:
- Workers change plugs once or twice per shift (as OSHA guidance recommends for maximizing foam attenuation)
- Hygiene concerns make reusable plug cleaning impractical or non-compliant
- The administrative cost of reusable plug tracking and inspection exceeds the consumable cost savings
For facilities with large crews changing plugs twice per shift, reusable alternatives can reduce per-worker annual hearing-protection cost significantly. See our reusable vs. disposable earplugs guide for a full cost-per-use analysis framework. For most industrial operations running 10 to 50 workers, the 6940 in bulk storeroom format remains cost-competitive with reusable options once cleaning compliance and loss replacement are factored in.
Final Verdict
The Moldex 6940 Glide Uncorded is a well-engineered product that solves a real problem. The twist-in insertion mechanism is not a marketing gimmick — it addresses a genuine hygiene barrier to earplug compliance in dirty industrial environments. NRR 30 is the ceiling of what disposable foam can deliver, and the 4.8/5 verified buyer rating from a predominantly industrial buyer pool confirms the product performs as designed in real-world conditions.
It is not the right tool for every situation. Environments where workers wear gloves or routinely clean hands before plug insertion can use higher-NRR roll-down plugs like the Moldex Pura-Fit (NRR 33) at lower cost per pair. Facilities trying to reduce disposable waste should weigh the reusable alternative economics carefully. But for the hygiene-constrained industrial environment that needs maximum NRR in a disposable format, the 6940 is a defensible, compliant, and practically sound choice. Explore our best hearing protection guide to see where the 6940 fits in the broader hearing-protection landscape.
Score: 4.8 / 5
Buy Moldex 6940 at WC Safety Check Price on AmazonFrequently Asked Questions
What is the NRR of the Moldex 6940 Glide?
The Moldex 6940 Glide is rated NRR 30 under ANSI S3.19-1974. Under OSHA’s required 50% derating (29 CFR 1910.95, Appendix B), the effective attenuation credited for compliance purposes is 11.5 dB, providing adequate protection in environments up to approximately 101.5 dBA TWA. For more on how NRR translates to real-world attenuation, see our NRR hearing protection guide.
How do you insert the Moldex 6940 Glide earplug?
Grasp the plug at its outer flange or rim and insert into the ear canal with a slow, gentle twisting motion. Do not compress or roll the foam body. The twist-in mechanism allows the plug to seat itself without finger contact with the foam that enters the ear canal. First-time users should practice the technique briefly to confirm a proper seal.
Is the Moldex 6940 latex-free?
Yes. The 6940 is made from polyurethane foam and is both latex-free and PVC-free, making it suitable for workers with latex sensitivities and for environments requiring detailed material documentation such as food processing or pharmaceutical manufacturing.
What is the difference between the Moldex 6940 and 6945?
Both share the same NRR 30 twist-in foam body. The 6940 is uncorded; the 6945 has a connecting cord that keeps the plug pair together around the neck when not inserted. The corded 6945 is preferred for intermittent-noise environments where plugs are removed and reinserted frequently during a shift.
What is the difference between the 6940 and 6941?
The 6940 and 6941 share the same NRR 30 twist-in design and are both uncorded. The 6941 is the camouflage colorway variant, popular in outdoor, hunting, and military contexts where a low-visibility color is preferred over the standard model.
How many pairs are in a box of Moldex 6940?
The standard 6940 box contains 100 pairs. Moldex also offers 50-pair jar formats (6686 for standard, 6687 for camouflage) and a 150-pair PlugStation dispenser (6883) in a corded format for wall-mount distribution.
Can the Moldex 6940 be reused?
No. The 6940 is a single-use disposable earplug and is not designed for washing or reuse. For a washable option with lower per-shift cost, consider a triple-flange or banded reusable plug. See our reusable vs. disposable earplugs guide for a detailed cost-per-use comparison.
What environments is the Moldex 6940 best suited for?
The 6940 is best suited for high-noise industrial environments where hand contamination makes roll-down foam plugs a hygiene concern: machining, chemical processing, construction, automotive repair, and similar settings. It is appropriate wherever 8-hour TWA noise levels fall between 85 dBA and approximately 101.5 dBA.
How does the twist-in mechanism help with hygiene?
Standard roll-down foam plugs require direct finger contact with the foam body during compression and insertion, transferring contaminants from the worker’s hands to the plug surface that enters the ear canal. The 6940’s twist-in design allows insertion by holding only the plug rim, keeping the ear-canal-contacting foam surface free of direct fingertip contact throughout insertion.
Does the Moldex 6940 meet OSHA hearing protection requirements?
Yes. The 6940 is ANSI S3.19-certified at NRR 30. When derated per OSHA 29 CFR 1910.95 Appendix B (50% derating), it provides 11.5 dB of credited effective protection, adequate for environments up to approximately 101.5 dBA TWA under OSHA’s general industry noise standard.
What is the OSHA 50% derating rule and how does it apply to NRR 30?
OSHA requires employers to derate all earplug NRR values by 50% when calculating whether an employee’s exposure is reduced to a compliant level. The formula is: Effective Attenuation = (NRR − 7) / 2. For NRR 30: (30 − 7) / 2 = 11.5 dB. This derating accounts for the gap between laboratory test conditions and real-world workplace fit. See our NRR hearing protection guide for the complete methodology.
How does the 6940 compare to the Moldex Pura-Fit (NRR 33)?
The Pura-Fit holds a higher NRR (33 vs. 30) and uses a standard roll-down insertion method. In clean-hands environments, the Pura-Fit’s extra three NRR points provide marginally greater rated attenuation (about 1.5 dB of derated compliance margin). In contaminated-hands environments, the 6940’s hygiene advantage is operationally more significant than that marginal NRR difference. See our best Moldex earplugs guide for a full head-to-head comparison.
Is the Moldex 6940 suitable for a formal hearing conservation program?
Yes. The 6940’s documented NRR 30 rating, ANSI S3.19 certification, and clear latex-free/PVC-free material specification make it a strong audit-ready choice for hearing conservation programs governed by OSHA 29 CFR 1910.95. The 100-pair bulk box format supports storeroom distribution and pair-count tracking required under formal HCP documentation.
What is the best hearing protection for environments above 101.5 dBA?
No single earplug provides compliant protection above approximately 101.5 dBA TWA under OSHA’s 50% derating accounting. For these environments, OSHA recommends dual protection: an earplug (such as the 6940) combined with an earmuff. Explore our hearing protection collection for compatible earmuffs and our best hearing protection guide for dual-protection recommendations.
Where can I buy the Moldex 6940 in bulk?
The 6940 is available in a 100-pair bulk box at WC Safety and on Amazon. The Moldex PlugStation 6883 and refill jars (6686/6687) are available through industrial safety distributors. Browse our full earplug collection for additional bulk-format options.
Are there other foam earplugs worth comparing before buying?
Yes. The best foam earplug depends on your NRR target, insertion preference, environment, and budget. See our best foam earplugs guide, our best earplugs for work guide, and our brand-specific best Moldex earplugs guide for a full comparison across the category. You can also browse our earplug collection to compare options side by side.
Does Moldex offer a corded version of the Glide?
Yes. The Moldex 6945 is the corded variant of the same NRR 30 Glide foam body. The cord connects the two plugs and allows the pair to hang around the neck during breaks, reducing plug loss in environments where workers remove hearing protection frequently throughout the shift.
Why Trust This Review?
WC Safety is an industrial PPE retailer specializing in hearing protection, respiratory protection, and site safety equipment. Our product reviews are written by Steven Eaton, a safety professional with hands-on PPE sourcing and compliance experience. All performance claims in this review are sourced from:
- The product’s ANSI S3.19-1974 certified NRR rating as published by Moldex
- OSHA 29 CFR 1910.95 derating methodology (Appendix B)
- Verified buyer reviews from the product’s retail listing (94 reviews, 4.8/5)
- Publicly documented material specifications (latex-free, PVC-free polyurethane)
No manufacturer-supplied performance claims beyond ANSI-certified NRR are used. No attenuation figures are fabricated or extrapolated beyond OSHA-standard derating math. See our full PPE collection for related products and our earplugs for work guide for broader category context.
Our Review Methodology
WC Safety earplug reviews are built on three data sources: (1) ANSI-certified NRR ratings as documented by the manufacturer, (2) OSHA 29 CFR 1910.95 derating calculations performed by WC Safety editorial staff, and (3) verified buyer reviews from retail listings. Physical comfort assessments and fit observations cited in this review reflect aggregated verified-buyer feedback rather than single-reviewer subjective impression. No attenuation figures beyond those derivable from OSHA-mandated derating of the published NRR are claimed. All internal links point to verified live pages in the WC Safety catalog.
Affiliate Disclosure: WC Safety participates in the Amazon Associates program. Links on this page marked with Amazon affiliate tags (wcsafety04-20) earn WC Safety a commission on qualifying purchases at no additional cost to you. Affiliate relationships do not influence product scores or editorial recommendations. The Moldex 6940’s 4.8/5 rating reflects verified buyer reviews, not sponsored content. For questions about our editorial standards, contact WC Safety directly.
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