Moldex 6685 Camo Plugs Foam Earplug Jar NRR 33 40 Pairs Review (2026)

NRR 33 in a Jar: Is the Moldex 6685 Camo Plug Worth It for High-Noise Industrial Work?

Published June 13, 2026 · Last updated July 27, 2026

If your hearing conservation program needs bulk, uncorded, disposable foam earplugs that hit the ceiling of ANSI S3.19 attenuation — NRR 33 — the Moldex 6685 Camo Plugs Jar belongs on your shortlist. The 40-pair jar format keeps 80 single-use plugs desk-ready without a dispenser, the camouflage print boosts worker acceptance in outdoor and agricultural settings, and Moldex’s roll-down polyurethane foam has a decades-long compliance record in environments up to ~103 dB TWA. This review digs into the actual numbers, the real-world fit issues, and whether the 6685 jar is the right SKU for your operation — or whether a sibling variant or competing product makes more sense.

Hearing Protection › Ear Plugs › Moldex 6685 Review

Moldex 6685 Camo Plugs Foam Earplug Jar NRR 33 — 40 Pairs Review (2026)

Workplace noise-induced hearing loss (NIHL) is permanent and irreversible. OSHA 29 CFR 1910.95 requires employers to institute engineering controls and — when those controls cannot bring TWA noise below 90 dBA — to provide adequate hearing protection and verify its use. The ANSI S3.19-1974 test method sets the benchmark for NRR values; OSHA’s practical derating rule (divide NRR by 2, subtract from ambient dB) keeps programs honest. At NRR 33, the Moldex 6685 offers the highest possible single-HPD attenuation available in the standard foam-earplug category.

The 6685 jar is purpose-built for teams that do not want to bolt a wall dispenser to a jobsite trailer or pass out boxes of loose pairs. Each jar holds 40 pairs (80 plugs) in a resealable container that fits a tool bag, a foreman’s desk drawer, or a range bag. The camouflage colorway was not a cosmetic afterthought — Moldex research consistently shows color-differentiated earplugs improve voluntary usage rates in populations that resist "safety-orange" aesthetics, particularly outdoor trades, agriculture, forestry, and military-adjacent contractors.

What you will not find here is inflated performance prose. The plugs are disposable, uncorded, made from polyurethane foam, and latex/PVC-free. That is the entire bill of materials. The differentiation is in the foam formulation, the dimensional consistency across the 40 pairs, and Moldex’s quality control — all of which are discussed below alongside the documented limits of this product category.

Who the Moldex 6685 Camo Plugs Are For

The 6685 jar fits a specific operational profile. It is the right choice if you manage a small crew — landscapers, range staff, timber workers, agricultural equipment operators — where a 40-pair portable jar is more practical than a wall-mounted bulk dispenser. It is also the right choice for OSHA hearing conservation programs that need maximum NRR documentation without moving to a banded or muff-style HPD. Workers who resist safety-orange or yellow earplugs due to aesthetic preference are more likely to maintain compliance with the camo variant, which Moldex designed with that exact use case in mind. See our Best Earplugs for Work guide for a broader comparison across earplug categories.

It is not the right choice for high-volume manufacturing lines where a PlugStation dispenser (the 6648) would cost less per pair, for workers who need a corded option to prevent loss during intermittent-noise tasks, or for employees with documented fit issues with single-size cylindrical foam plugs. If your noise exposure exceeds 103 dB TWA on a sustained basis, you likely need a dual-protection strategy — earplugs plus earmuffs — regardless of which earplug SKU you select.

Where the Moldex 6685 Performs Well

Maximum NRR Attenuation for High-Noise Environments

NRR 33 is the highest rating you will find on a standard foam earplug under ANSI S3.19-1974 laboratory conditions. Applying OSHA’s 50% derating, real-world effective attenuation is approximately 13 dB, meaning environments up to ~103 dB TWA can be brought within OSHA’s 90 dB action level with proper insertion. For workers needing to understand how NRR translates to actual exposure reduction, our NRR Hearing Protection Guide explains the full calculation methodology.

Consistent Roll-Down Foam Insertion

Moldex uses a high-grade polyurethane foam that compresses into a tight cylinder when rolled between clean, dry fingertips and re-expands slowly enough to allow proper canal insertion before the seal forms. Workers who follow the roll-compress-hold-20-seconds insertion protocol documented on the package consistently achieve the seal that underpins the NRR 33 rating. This is the same insertion method required for any foam plug to meet its rated attenuation.

Camouflage Print and Worker Acceptance

Compliance failure is the leading real-world cause of hearing protection underperformance — not product quality. The Moldex Camo Plugs were designed to address the documented resistance many outdoor tradespeople, hunters, range staff, and agricultural workers have toward high-visibility safety colors. The camo print removes a psychological barrier to use without altering the acoustic properties of the foam. For programs struggling with compliance, the color swap alone can meaningfully improve HPD usage rates.

Latex-Free and PVC-Free Material

Both latex and PVC can cause contact dermatitis or allergic reactions in sensitized workers. The 6685 polyurethane foam eliminates both materials, making it compatible with skin-sensitivity protocols and applicable to workplaces that maintain latex-free environments for other PPE compatibility reasons. This is a documented specification, not a marketing claim.

Portable Jar Format for Field Deployment

The 40-pair resealable jar is a meaningful operational advantage for mobile crews. A foreman can drop a jar in a truck, a range bag, or a supply cabinet without needing a permanent dispenser mount. The jar also functions as an effective visual supply indicator — when it is getting low, supervisors know to reorder. For programs managing hearing protection under OSHA Hearing Conservation Program requirements, maintaining visible, accessible supply is part of documentation compliance.

Where the Moldex 6685 Falls Short

Single Size Limits Universal Fit

The 6685 is produced in one size. Workers with smaller or larger-than-average ear canals will experience inconsistent acoustic seals, which directly degrades achieved attenuation below the rated NRR 33. NIOSH research consistently identifies fit as the primary variable between laboratory NRR and field-measured attenuation. Programs with diverse workforce anatomy should supplement the 6685 with a sized alternative or conduct individual fit testing (OSHA permits third-party PFAS testing as supplemental documentation).

No Cord Option in This SKU

The 6685 jar is uncorded only. For intermittent-noise environments — where workers need to insert and remove plugs repeatedly during a shift — corded options dramatically reduce plug loss. The Moldex 6609 (corded, 100 pairs) addresses this use case. If loss rate is a cost or compliance concern in your operation, the 6609 is the appropriate SKU.

Higher Per-Pair Cost vs. Bulk Dispenser SKUs

The 40-pair jar pricing is convenient but not economical at scale. The Moldex 6648 PlugStation provides 500 pairs and a dispensing mechanism for high-volume lines, reducing per-pair cost significantly. The 6685 is optimized for portability and team-scale deployment, not factory-floor volume purchasing.

Camouflage Pattern Reduces Dropped-Plug Visibility

An ironic consequence of the camo colorway: dropped earplugs on outdoor surfaces — gravel, soil, mulch, leaf litter — are genuinely harder to spot and retrieve. In environments where dropped plugs represent a sanitation or FOD (foreign object debris) concern, the high-visibility orange alternative (Moldex 6800 series) may be preferable.

Competitor Comparison

For a deeper look at how the Moldex lineup stacks up, see our Best Moldex Earplugs guide.

Moldex Camo Plugs Series — Which SKU Is Right for You?

Compatible Accessories and Program Support

The Moldex 6685 integrates with standard hearing conservation program infrastructure:

• Dispenser compatibility: The jar is self-contained; for wall-mount dispensing, upgrade to the 6648 PlugStation.
• Dual-protection pairing: In environments above 103 dB TWA, pair the 6685 with compatible over-the-head earmuffs from the Hearing Protection collection. Dual protection adds approximately 5–10 dB above the higher-rated single HPD.
• Storage: The resealable jar lid protects plugs from contamination in dusty field environments; no additional storage accessory needed at the 40-pair quantity.
• Fit testing: NIOSH-approved PFAS systems (e.g., 3M E-A-Rfit, Honeywell VeriPRO) can validate achieved attenuation on individual workers if documented fit verification is required by your hearing conservation program.

Browse the full Ear Plugs collection for additional options, and visit the PPE collection for complementary safety equipment.

Hearing Protection Standards: NRR, ANSI S3.19, and OSHA 29 CFR 1910.95

Every NRR value on a U.S. hearing protector is derived from laboratory testing under ANSI S3.19-1974 — a protocol using trained listeners in a controlled environment. The resulting number represents the decibel reduction achieved at the 98th percentile of test subjects. Because real-world insertion technique, fit, and usage consistency fall below lab conditions, OSHA mandates that employers derate NRR by 50% when estimating real-world protection for hearing conservation program adequacy calculations.

The practical formula: Estimated Exposure = TWA dB − ((NRR − 7) ÷ 2). For the Moldex 6685 at NRR 33: ((33 − 7) ÷ 2) = 13 dB effective attenuation. A worker at 100 dB TWA achieves an estimated exposure of 87 dB — below the OSHA 29 CFR 1910.95 permissible exposure limit of 90 dB TWA. This makes the 6685 one of the few single-HPD options that clears OSHA’s PEL in environments up to ~103 dB TWA without dual protection.

For a comprehensive walkthrough of the regulations and how to build a compliant program, see our OSHA Hearing Conservation Program Guide and our NRR Hearing Protection Guide. To compare foam-specific options, our Best Foam Earplugs for Manufacturing guide covers the top-rated SKUs by use case. For the broader tradeoff between disposable and reusable plugs, see Reusable vs Disposable Earplugs.

Total Cost of Ownership

At 40 pairs per jar, the 6685 is priced for convenience, not volume purchasing. The per-pair cost is higher than the 6608 (200 pairs) or 6648 (500 pairs) SKUs. The TCO calculation needs to account for:

• Loss rate: Uncorded plugs in field environments have higher loss rates than corded options; factor in one-to-two pairs per worker per day for outdoor mobile crews.
• Compliance value: If the camo colorway increases usage rates by even 10–15% in a resistant workforce, the per-pair premium is cost-effective when weighed against OSHA citation risk and workers’ comp exposure from NIHL claims.
• Program documentation: The jar format supports easy inventory tracking. Each depleted jar represents approximately 40 worker-uses, simplifying supply consumption records for 29 CFR 1910.95(d)(3) compliance.
• Fit testing: If individual PFAS testing is added to validate achieved attenuation, amortize that cost across the full program population, not per-earplug unit.

Final Verdict

The Moldex 6685 Camo Plugs Jar is a purpose-built solution for a specific operational problem: maximum-NRR disposable hearing protection in a portable, field-ready format with a colorway that improves compliance in outdoor and agricultural workforces. It does not try to be a dispenser system, a corded plug, or a sized-fit solution — and it should not be evaluated as any of those things. Within its defined use case, it is genuinely excellent. The NRR 33 ceiling, latex/PVC-free materials, consistent polyurethane foam formulation, and 4.8-star validation from 359 verified buyers make this a confident recommendation for foremen, range safety officers, landscape crew supervisors, and agricultural operations managers.

If fit variability is a documented problem on your site, add a second earplug option for non-standard canal sizes. If cord retention is critical, spec the 6609 instead. If volume cost is the primary driver, move to the 6648 PlugStation. For everything else — the 6685 jar delivers. Explore all options in our Best Hearing Protection for Industrial Workers guide or go directly to our Best Earplugs for Work comparison.

See full review Check Price on Amazon

Frequently Asked Questions

What does NRR 33 mean for the Moldex 6685?

NRR 33 is the Noise Reduction Rating assigned under ANSI S3.19-1974 laboratory testing. It represents the maximum decibel reduction achievable under ideal insertion conditions. OSHA’s derating formula yields approximately 13 dB effective attenuation in real-world use.

Is the Moldex 6685 OSHA-compliant for my hearing conservation program?

Yes, if your workers’ TWA noise exposure does not exceed ~103 dB and insertion technique is correct. OSHA 29 CFR 1910.95 requires that hearing protection reduce exposure to at or below 90 dB TWA (or 85 dB for workers already with documented standard threshold shifts). At NRR 33, the 6685 meets this requirement in environments up to approximately 103 dB TWA using OSHA’s 50% derating.

How do I properly insert the Moldex 6685 Camo Plugs?

Roll the earplug into a tight cylinder using clean, dry fingertips. Reach over your head with the opposite hand to straighten the ear canal. Insert the compressed plug fully and hold for 20–30 seconds while the foam re-expands to form an acoustic seal. Proper insertion is required to achieve the rated NRR 33 attenuation.

Are the Moldex 6685 earplugs reusable?

No. The 6685 is a disposable single-use earplug. Reusing foam earplugs degrades the foam structure, reduces re-expansion consistency, and introduces hygiene risk. For reusable options, see our Reusable vs Disposable Earplugs guide.

Are the Moldex 6685 earplugs latex-free?

Yes. Moldex 6685 foam earplugs are both latex-free and PVC-free per the manufacturer’s documented specifications.

What is the difference between Moldex 6608 and 6685?

Both share the same NRR 33 Camo Plugs foam. The 6608 is a 200-pair box (uncorded) designed for high-volume dispensing. The 6685 is a 40-pair resealable jar optimized for portable field deployment without a wall-mounted dispenser.

Is there a corded version of the Moldex Camo Plugs?

Yes. The Moldex 6609 is the corded version of the same foam at 100 pairs per box. It is the recommended choice for intermittent-noise tasks where workers insert and remove plugs multiple times per shift.

Do the Moldex 6685 fit small ear canals?

The 6685 is produced in a single standard size. Workers with smaller-than-average ear canals may not achieve a full acoustic seal, which reduces effective attenuation below NRR 33. Consider individual fit testing or a sized earplug alternative if fit is documented as problematic in your workforce.

When do I need dual hearing protection (earplugs + earmuffs)?

OSHA and NIOSH recommend dual protection when TWA noise exposure exceeds approximately 105 dB, or when a single HPD cannot reduce exposure to safe levels. Dual protection adds roughly 5–10 dB above the single higher-rated device. Browse Hearing Protection for compatible earmuff options.

Are the Moldex 6685 suitable for shooting ranges?

Yes. NRR 33 is among the highest-rated disposable foam earplugs available and is appropriate for most indoor and outdoor shooting range environments. For sustained range sessions or indoor ranges where peak impulse levels are high, dual protection (plugs plus earmuffs) is the conservative choice.

Are these earplugs appropriate for agricultural equipment operators?

Yes. Tractors, combines, and grain handling equipment commonly generate 90–100 dB exposures during operation. The 6685’s NRR 33 provides adequate protection in that range, and the camouflage colorway was specifically noted by Moldex as relevant to agricultural contexts. Ensure proper fit and insertion per package instructions.

Can I use the Moldex 6685 with PFAS (Personal Fit Attenuation Score) testing?

Yes. Any NIOSH-approved PFAS system can be used with the 6685 to generate individual fit documentation. This is useful for OSHA hearing conservation programs that elect to document individual achieved attenuation rather than relying on population-average NRR derating.

Can I refill the 6685 jar with other Moldex earplug models?

The jar can physically hold other single-use foam earplugs, but mixing SKUs in a single container creates compliance and documentation problems. Best practice is one SKU per container and clear labeling for program record-keeping.

Are the Moldex 6685 earplugs appropriate for manufacturing environments?

Yes, for environments in the 90–103 dB TWA range. For manufacturing-specific recommendations, see our Best Foam Earplugs for Manufacturing guide, which evaluates SKUs by shift length, exposure level, and workforce compliance variables.

How do Moldex Camo Plugs compare to Moldex SparkPlugs?

Both offer NRR 33 using similar polyurethane foam formulations. SparkPlugs use a bright multi-color pattern versus the camo print. Acoustic performance is equivalent; the differentiation is purely aesthetic and compliance-driven based on workforce preference. See our Best Moldex Earplugs guide for a full lineup comparison.

Can I order the Moldex 6685 in bulk for a large crew?

Yes. WC Safety supports bulk PPE orders. For quantities beyond the 40-pair jar, the 6608 (200-pair box) or 6648 PlugStation (500 pairs) may offer better per-pair economics. Contact WC Safety directly for volume pricing or visit the Ear Plugs collection to compare available formats.

Do earplugs prevent all noise-induced hearing loss?

No hearing protector eliminates all noise-induced hearing loss risk — they reduce it. Compliance (consistent correct use during ALL noise exposure periods), proper insertion technique, and a comprehensive OSHA hearing conservation program with regular audiometric monitoring are all required components. See our OSHA Hearing Conservation Program Guide for program-building guidance.

How should I store the Moldex 6685 jar to keep plugs clean?

Keep the resealable lid closed when not dispensing plugs. Store out of direct sunlight and away from chemical solvents, which can degrade polyurethane foam. Avoid storing in high-humidity environments for extended periods, as moisture can affect foam re-expansion performance. The jar’s sealed design handles normal jobsite storage conditions without issue.

Reviewed by Steven Eaton, WC Safety Editorial — Industrial PPE specialist with direct sourcing and compliance program experience across hearing protection, respiratory protection, and fall arrest categories. Reviewed by WC Safety Editorial.

Review Methodology

WC Safety product reviews evaluate hearing protection across five weighted criteria: (1) rated attenuation vs. category benchmark, (2) material safety and compliance documentation, (3) format practicality for target use case, (4) verified user feedback volume and distribution, (5) price-to-performance relative to direct SKU alternatives. Scores reflect the weighted composite; no single criterion is determinative. Reviews are refreshed when manufacturer specifications change, new regulatory guidance is issued, or user feedback patterns shift materially.