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Industrial Safety Equipment, PPE Guides & Reviews
Industrial Safety Equipment, PPE Guides & Reviews
Moldex 6687 Glide Jar Cordless Earplugs — NRR 30 product photo
August 27, 2026 Steven Eaton

Moldex 6687 Glide Camo Review — NRR 30 Jar Twist-In Foam Earplug, 50 pairs

WC Safety Editorial Verdict: 4.4/5

WC Safety Editorial Verdict — Moldex 6687 Glide Camo Jar: 4.4/5. The 6687 is the smart buy when you need a fixed, high-volume dispensing point: 50 pairs of the same NRR 30 twist-in Glide Camo foam plug, in a countertop jar that lowers per-pair cost and kills individual-wrapper waste at construction shacks and outdoor toolrooms. Twist-in insertion sidesteps the dirty-hands roll-down problem that undermines real-world attenuation on jobsites, and the camo color drives the compliance buy-in this line is known for. Treat the NRR 30 lab number honestly — apply the NIOSH device-type derate for formable foam (50% of NRR - 7) or OSHA's (NRR-7)/2 estimate when you spec it against your hearing protection program, and see what is nrr noise reduction rating explained before relying on the headline figure.

Moldex 6687 Glide Camo Jar Review: Best Jar-Format Earplug for Outdoor and Construction Safety Supply Stations?

The Moldex 6687 Glide Camo Jar packages 50 pairs of Glide Camo NRR 30 twist-in foam earplugs in a countertop dispenser jar — the same earplug as the 6941 and 6946 Glide Camo variants, in jar-dispensing format. The jar format reduces per-pair cost, eliminates individual packaging waste, and suits fixed safety supply points. The camouflage pattern provides the compliance advantage of the Camo line in a high-volume dispenser format for construction site shacks, outdoor facilities, and heavy equipment operations.

Editorial Verdict — Moldex 6687 Glide Camo Jar: 4.4/5
Ideal for high-volume outdoor/construction safety supply stations where camo aesthetics improve worker compliance. Same NRR 30 twist-in protection as 6941/6946, in cost-effective jar format.

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Specifications

Feature Details
Model 6687
NRR 30
Insertion Twist-in (no rolling required)
Format 50-pair jar
Color Camouflage
EPA NRR Label 40 CFR Part 211 Subpart B

Jar Format at Outdoor and Construction Sites

Jar-format earplugs in construction site safety shacks, outdoor maintenance toolrooms, and equipment yards face unique challenges compared to indoor industrial facilities:

  • Protect jar from weather exposure — UV degrades foam over time; keep jar indoors or in covered area
  • Dust and particulates at outdoor sites can contaminate open jars — keep lid closed when not in use
  • Temperature extremes (hot/cold) affect foam characteristics — earplugs stored in vehicle cabs or outdoor boxes may be affected by heat in summer. Check foam resilience before use.
  • Track consumption — outdoor programs often have less oversight than indoor; periodic audits of jar refill frequency help document active earplug provision

OSHA Hearing Conservation Requirements: When Are Earplugs Mandatory?

OSHA 29 CFR 1910.95 (General Industry) requires employers to take action when workers are exposed to noise at or above specific thresholds:

Noise Level (TWA) Required Action
85 dB(A) or above Action Level: Establish Hearing Conservation Program; provide hearing protection; audiometric testing
90 dB(A) or above PEL: Engineering/administrative controls required first; hearing protection mandatory
100 dB(A) or above 2-hour daily limit without protection; must use hearing protection
115 dB(A) or above 15-minute limit; double protection often required

The action level (85 dB(A)) triggers the full hearing conservation program requirement: noise exposure monitoring, baseline and annual audiometric testing, hearing protection provision, employee training, and recordkeeping. Many employers issue hearing protection to all workers in any area above 85 dB(A) regardless of measured TWA.

Understanding NRR: The Noise Reduction Rating Explained

Every earplug sold in the US carries an NRR — the Noise Reduction Rating, labeled under EPA 40 CFR Part 211 and tested per ANSI S3.19-1974. Understanding how NRR translates to real-world protection is critical for compliance:

  • OSHA enforcement estimate (50% safety factor): Effective dB = (NRR − 7) ÷ 2. For NRR 30: (30 − 7) ÷ 2 = 11.5 dB effective attenuation
  • NIOSH method (50% derating for formable foam): The same arithmetic as the OSHA estimate — NIOSH keeps 50% of (NRR − 7) for formable foam
  • Maximum TWA with NRR 30 (OSHA method): 90 dB(A) PEL + 11.5 dB = 101.5 dB(A). At exposures above 101.5 dB(A), NRR 30 alone is insufficient; double protection or higher-NRR devices are needed

The gap between labeled NRR and real-world protection exists because laboratory testing uses trained subjects and careful supervised insertion. In the field, workers insert earplugs quickly, sometimes in poor light, without supervision — resulting in significantly less attenuation than the label suggests. This is why NIOSH derates foam earplugs more aggressively than other protection types.

Hearing Conservation Program: What OSHA Requires Beyond Just Providing Earplugs

Simply handing out earplugs does not satisfy OSHA 1910.95. A compliant Hearing Conservation Program requires:

  • Noise monitoring: Initial survey to identify exposures above 85 dB(A); remeasure when operations change significantly
  • Audiometric testing: Baseline within 6 months of hire for noise-exposed workers; annual retest; professional review of test results; follow-up when Standard Threshold Shift (STS) is detected
  • Hearing protection selection: Provide at least two types of hearing protection; ensure adequate attenuation for measured exposures using NRR calculations; replace worn or damaged devices
  • Training: Annual training on effects of noise on hearing, purpose of audiometric testing, use and care of hearing protection
  • Recordkeeping: Audiograms retained for duration of employment; noise measurement records retained 2 years; audiogram records retained 2 years

Browse all Moldex earplugs or see the full earplug selection at WC Safety including foam, banded, and reusable options.

Frequently Asked Questions

Q: Is the 6687 Glide Camo Jar the same earplug as 6941/6946 in jar format?

A: Yes — identical NRR 30, twist-in insertion, EPA NRR labelling. Jar vs. individually wrapped is a packaging format choice only.

Q: How many pairs fit in the 6687 jar?

A: 50 pairs (100 individual earplugs).

Q: Is the camo jar available to refill with bulk earplugs?

A: No — Moldex jars come pre-filled and are not designed for customer refilling. When the jar is empty, replace with a new 6687 jar or refillable standard jar with 6687 earplugs purchased in bulk.

Q: What construction noise levels require NRR 30?

A: OSHA 1926.52 (Construction) requires hearing protection at or above 90 dB(A) TWA. Common construction noise: excavators 85-95 dB(A); concrete saws 100-110 dB(A); jackhammers 100-115 dB(A); nail guns 95-110 dB(A). NRR 30 is effective up to 101.5 dB(A) TWA (OSHA method).

Q: Are construction workers required to have a hearing conservation program?

A: Construction is governed by OSHA 1926.52, which requires hearing protection and exposure monitoring when exposures reach 90 dB(A) TWA. OSHA 1926.52 has a less comprehensive audiometric testing requirement than general industry 1910.95 — consult your safety manager for current construction hearing conservation requirements.

Q: Can the jar be mounted on a wall?

A: The standard Moldex jar dispenser is a countertop unit. Wall-mount dispensers for earplug jars are available from third-party safety supply vendors — check for compatibility with Moldex jar diameter.

Q: What is the shelf life of earplugs in the jar format?

A: Moldex foam earplugs have a 5-year shelf life from manufacture date when stored properly. In an open jar at a worksite, environmental factors (UV, temperature, chemical vapors) can shorten practical service life. Earplugs that feel stiff, crumbly, or no longer spring back should be discarded and jar refilled.

Q: Does the camo color help with safety visibility?

A: No — camo is intentionally designed to reduce visibility, which is the opposite of safety-oriented high-visibility coloring. Camo earplugs are a compliance appeal choice, not a visibility safety choice. High-visibility earplugs (bright colors) are available if detection of dropped earplugs in machinery or product is a priority.

Q: Do outdoor workers need hearing protection from wind noise?

A: Wind noise at typical working conditions (up to 30 mph) is generally below OSHA action levels. Wind noise becomes a factor at very high wind speeds (above 50 mph) during specific operations. Industrial noise from outdoor equipment (generators, saws, heavy equipment) remains the primary hearing conservation concern for outdoor workers.

Q: What is the OSHA standard for construction hearing protection?

A: 29 CFR 1926.52 — Occupational Noise Exposure. Hearing protection is required when noise exposures equal or exceed 90 dB(A) TWA. Engineering and administrative controls should be implemented when feasible; hearing protection is supplementary.

Q: Can I use the Glide Camo Jar for a shooting range?

A: Shooting ranges are high-impulse noise environments (140+ dB peak for rifle fire). NRR 30 foam earplugs provide significant impulse noise attenuation. For shooting range operators and frequent shooters, NRR 33 earplugs or double protection (earplugs + earmuffs) is more appropriate.

Q: Are there OSHA-approved brands of earplugs I must use?

A: OSHA does not approve specific earplug brands. The requirement is that hearing protection must be adequate to reduce employee noise exposure to acceptable levels. Any EPA-labelled earplug with sufficient NRR for the specific exposure level meets OSHA requirements. Moldex 6687 is EPA-labelled.

Q: What is the difference between impulse noise and continuous noise protection?

A: NRR ratings are based on continuous noise testing (ANSI S3.19-1974). Impulse noise (gunfire, explosions) has different physics — peak pressure levels differ from TWA. NRR 30 provides strong attenuation for both, but impulse noise environments may warrant double protection or higher-NRR devices for peak exposure management.

Q: Where can I buy the Moldex 6687 Glide Camo Jar?

A: At WC Safety. Browse all Moldex earplug formats.

Noise-Induced Hearing Loss: What Workers and Safety Managers Must Know

Noise-induced hearing loss (NIHL) is the most prevalent occupational illness in the United States. NIOSH estimates that approximately 22 million US workers are exposed to hazardous noise annually. NIHL is:

  • Permanent: Unlike some occupational diseases, NIHL cannot be reversed. Hair cells in the cochlea, once damaged, do not regenerate. This is why prevention is the only effective strategy.
  • Progressive: Hearing loss accumulates over years of exposure. Workers may not notice significant hearing difficulty until their late career, when damage has been accumulating for decades.
  • Preventable: With consistent use of properly rated hearing protection and engineering controls, NIHL is almost entirely preventable. The technology and products exist — compliance is the variable.
  • High-frequency first: Early NIHL characteristically affects the 3000-4000 Hz range — the frequencies most important for understanding speech consonants. Workers notice they can "hear" people speaking but cannot understand them clearly. This "cookie bite" pattern on audiogram is a warning sign of noise damage.

The audiometric testing required by OSHA 1910.95 is specifically designed to detect this pattern early — when intervention (better hearing protection, reduced exposure) can prevent further loss. A Standard Threshold Shift (STS) detected on audiogram is a mandatory trigger for program review and protective action under OSHA requirements.

Double Hearing Protection: When NRR 30 Is Not Enough

For extremely loud environments (above 103 dB(A) TWA), even NRR 33 earplugs may be insufficient as sole protection. OSHA and NIOSH recommend dual hearing protection — wearing both earplugs and earmuffs simultaneously — when:

  • Measured TWA exceeds 105 dB(A)
  • Impulse peak levels exceed 140 dB(P)
  • Engineering controls have reduced noise to the extent feasible but residual exposure remains above 103 dB(A)

Combined NRR for dual protection is NOT the sum of both NRR values. The combination adds approximately 5 dB of protection beyond the higher-rated device alone. For NRR 30 earplugs + NRR 25 earmuffs: effective protection ≈ 13 + 5 = 18 dB (OSHA method). Select the combination that brings effective exposure below 90 dB(A).

Q: How do I train workers on OSHA-compliant earplug insertion?

A: OSHA 1910.95(k)(3)(i) requires training on proper use and care of hearing protectors. Effective training includes: demonstration of correct insertion technique; each worker demonstrating insertion to a trainer; feedback on insertion depth and fit check; annual refresher. Video training alone (without return demonstration) is insufficient for earplug training.

Q: What is the OSHA requirement for offering earplug types?

A: OSHA 1910.95(i)(3) requires employers to provide a variety of hearing protectors, not just one type. Workers must be allowed to select from at least two options adequate for their exposure. Offering camo alongside standard-color earplugs can satisfy the "variety" requirement while improving compliance.

Browse and Compare on WC Safety

Disclosures & editorial standards
WC Safety participates in the Amazon Services LLC Associates Program. Outbound Amazon links are affiliate links. We accept no manufacturer payment, sponsorship, or product samples. This content is not medical, legal, or regulatory advice. Safety equipment selection is governed by applicable OSHA standards and your facility's safety program.

Pros & Cons

Pros
  • Twist-in insertion needs no roll-down, so workers with dusty or gloved hands still seat the 6687 correctly — the single biggest driver of real-world attenuation on jobsites
  • NRR 30 (ANSI S3.19) puts it near the top of the foam range, well-suited to the 90 dBA OSHA PEL and high-noise equipment yards
  • 50-pair countertop jar lowers per-pair cost versus individually wrapped boxes and eliminates wrapper litter at fixed safety supply points
  • Camouflage color improves worker buy-in on outdoor and construction crews where bright plugs are unpopular, supporting hearing-conservation compliance
  • Uncorded format avoids snag hazards around moving equipment and is the cleanest fit for a high-throughput dispenser jar
  • Single-use disposable foam means a fresh, hygienic pair every shift with no cleaning burden
Cons
  • NRR 30 is the lab ceiling, not field protection — NIOSH's device-type derating and OSHA's (NRR-7)/2 estimate land it far lower in practice
  • Uncorded jar format means dropped plugs are simply discarded, raising consumption versus a corded plug workers retain between insertions
  • Camo coloring is harder for a supervisor to spot-check for wear at a distance than a bright high-visibility plug
  • Jar dispensing exposes plugs to ambient dust and humidity at outdoor stations, so a contaminated plug should be discarded rather than inserted
  • Not metal-detectable, so it is unsuitable for food, beverage, and pharmaceutical production lines that require detectable PPE

Who It's For

Buy it if:

  • Construction sites, equipment yards, and outdoor maintenance operations running a fixed safety supply shack that needs high-volume, low-cost dispensing
  • Safety managers who want maximum foam-range attenuation (NRR 30) with twist-in insertion that survives dirty-hands jobsite conditions
  • Crews where bright-colored plugs hurt compliance and a camo aesthetic improves consistent wear
  • Operations standardizing a single jar SKU across multiple outdoor stations to simplify reorders and cut packaging waste

Look elsewhere if:

  • Food, beverage, or pharmaceutical lines that require metal-detectable PPE — choose a detectable plug like the Moldex 6615 instead
  • Workers who repeatedly remove and reinsert plugs through a shift and would lose uncorded plugs — a corded or reusable flanged plug is more economical
  • Anyone needing supervisor spot-checks at a distance, where a high-visibility color reads wear faster than camo

Frequently Asked Questions

Is the Moldex 6687 jar a better value than buying Glide Camo in individually wrapped boxes?

For a fixed safety supply point it usually is. The 50-pair jar lowers per-pair cost and removes individual wrappers, which cuts both spend and litter at a dispensing station. Individually wrapped pairs only win when plugs must travel in pockets or be issued one-at-a-time off-site, since the jar is meant to sit on a counter. Compare formats across the foam ear plugs range before committing a station to one SKU.

How much real-world protection does the 6687's NRR 30 actually deliver?

The NRR 30 is a laboratory rating under ANSI S3.19, not user-reported performance. NIOSH recommends derating foam plugs by about 25% (to roughly NRR 22-23 equivalent), and OSHA's estimate for a single protector is (NRR-7)/2, which would put effective attenuation near 11-12 dB. Always apply a derate when matching protection to a measured noise level — our guide on what is nrr noise reduction rating explained walks through the math.

How do I calculate whether NRR 30 is enough for my noise exposure?

Subtract the derated attenuation from your measured TWA exposure and confirm the result lands below OSHA's 90 dBA PEL, ideally below the 85 dBA action level. For an 8-hour TWA in the mid-90s dBA, a derated NRR 30 plug is generally adequate, but loud equipment yards can exceed that. Use how to calculate the nrr you need to run your own numbers rather than relying on the label figure.

Does the 6687 jar offer enough protection for the loudest jobsite tasks, or do I need a higher-NRR plug?

NRR 30 is near the top of the disposable foam range and covers most construction and equipment-yard exposures once derated. For the very loudest impact and heavy-machinery tasks, you may want to dual-protect with muffs or step up the plug. Browse the nrr 33 ear plugs and highest nrr ear plugs options if your dosimetry shows you need more headroom.

Should I pick the uncorded 6687 jar or a corded Glide for my crew?

Choose uncorded for fixed dispensing where a fresh pair is grabbed each shift and snag hazards around moving equipment matter. Choose corded when workers frequently remove plugs to communicate and would otherwise drop and waste them, since the cord keeps the pair around the neck. For a corded comparison in the Moldex line, see the moldex 6654 sparkplugs corded review.

How does the twist-in 6687 compare to a standard roll-down foam plug for jobsite use?

Roll-down plugs require clean fingers to roll, pull, and hold — hard to do reliably with dust and gloves, which leads to shallow, under-protecting fits. The 6687's twist-in design seats with a gripping stem and no rolling, so field attenuation holds up better in dirty conditions. If your crew still uses roll-downs, our how to insert foam earplugs guide shows the technique that affects their real protection.

Is the 6687 jar the right choice versus reusable flanged earplugs for a high-traffic station?

Single-use foam from a jar is simplest for high-traffic outdoor points: a clean pair every time, no washing, no shared hygiene concerns. Reusable flanged plugs cost less per shift over time but require cleaning, individual assignment, and replacement tracking. If your station serves rotating crews, disposable wins; if you issue plugs to named workers long-term, weigh the reusable earplugs options.

Is the 6687 a disposable single-use plug, or can workers reuse it across shifts?

It is a disposable single-use foam plug — intended for one shift, then discarded. Reusing foam plugs across days risks contamination and degraded foam recovery, which lowers the seal and the actual protection. For workers who genuinely need a reusable, washable option, compare against the flanged products in our disposable ear plugs versus reusable selection rather than stretching a foam plug's life.

How does the 6687 Glide jar compare to the Moldex Pura-Fit for the same dispensing role?

Both are high-NRR disposable foam plugs, but Pura-Fit is a tapered roll-down design while the 6687 Glide is twist-in. Twist-in suits dirty-hands jobsites; roll-down can give a deeper canal fit for trained users. Read the moldex 6800 pura fit review to weigh insertion style against your crew's habits before stocking a station.

How does the 6687 stack up against Moldex SparkPlugs for jar dispensing?

SparkPlugs are a tapered roll-down foam plug also offered in a jar; Glide is the twist-in alternative. If your crews struggle with roll-down technique, Glide's twist-in is more forgiving; if they prefer a slim tapered plug, SparkPlugs fit smaller canals well. Compare the jar versions directly via the moldex 6684 sparkplugs jar review.

When should I choose the 6687 instead of Moldex Softies for my supply station?

Softies are a softer, lower-NRR comfort-focused plug; the 6687 Glide prioritizes higher attenuation and twist-in convenience. Pick Glide for louder exposures and dirty-hands insertion; pick Softies when comfort over a long shift in moderate noise is the priority. The moldex 6600 softies review covers that comfort trade-off.

Does the camo color of the 6687 affect protection or just compliance?

The camouflage pattern has no effect on the acoustic foam or its NRR 30 rating — it is purely cosmetic and exists to improve worker buy-in where bright plugs are resisted. The trade-off is supervisor visibility: camo is harder to spot-check for proper seating from a distance than a high-visibility plug, so factor that into your inspection routine.

Can I use the 6687 jar on a food or pharmaceutical production line?

No — the 6687 is not metal-detectable, so it does not meet detectable-PPE requirements for food, beverage, and pharma environments where a dropped plug must be caught by metal detection. For those lines choose a detectable plug; the moldex 6615 sparkplugs metal detectable review covers a Moldex option built for that use.

Is the 6687 enough on its own, or should I pair it with earmuffs?

For most exposures a correctly seated NRR 30 plug is sufficient, but extreme noise or impact work can warrant dual protection. Pairing plugs with muffs does not simply add the two NRRs — the combined benefit is smaller, typically the higher device's NRR plus about 5 dB. Our ear plugs vs ear muffs guide explains when doubling up is justified.

Which buyers get the most value from the 6687 Glide Camo jar specifically?

Outdoor and construction operations running fixed safety supply shacks that need high-volume, low-cost dispensing, where twist-in insertion survives jobsite grime and camo coloring drives compliance. Indoor lines, detectable-PPE environments, and crews who reinsert plugs constantly are better served elsewhere. To benchmark it against the rest of the category, see our best foam ear plugs roundup.

Why trust WC Safety
Industrial PPE specialists. We do not accept manufacturer payment for placement.
Reviewed by
Steven Eaton, WC Safety Editorial — guidance reflects current OSHA, NIOSH and ANSI practice.
Our standards
Ratings combine published specs, hands-on familiarity, and verified customer data where available; we do not fabricate lab tests.
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Filed in: 50-pairs, 6687, camo, camouflage, Disposable Earplugs, earplug, glide, glide camo, hearing protection, jar, moldex, nrr 30, osha 1910.95, product review
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