Moldex Rockets 6405 Corded Reusable Earplugs NRR 27 Pocket Pak 50 Pairs Review (2026)

Affiliate Disclosure: WC Safety earns a commission on qualifying Amazon purchases at no extra cost to you. See full disclosure below.

The Corded Reusable Earplug Built for High-Traffic Noise Zones

Moldex Rockets 6405 Corded Reusable Earplugs NRR 27 Pocket Pak 50 Pairs Review (2026)

When your crew cycles hearing protection on and off dozens of times per shift, single-use foam plugs become a nuisance and a compliance liability. The Moldex Rockets 6405 addresses that friction head-on: a latex-free thermoplastic triple-flange earplug rated NRR 27 dB, sold in a 50-pair Pocket-Pak for shop-floor stocking, and corded so the plug hangs cleanly at the collar between uses rather than disappearing into a pocket or landing on a greasy floor. This review examines whether the Rockets 6405 earns its place in an industrial hearing conservation program — and who should reach for it versus alternatives.

Moldex is an OSHA-recognized manufacturer. Their NRR 27 rating on the Rockets line is measured under ANSI S3.19, the same laboratory-condition standard every U.S.-sold earplug must pass. The 50-pair Pocket-Pak format is designed for bulk dispensing points: drop a pak in a parts bin, a locker, or a first-aid station and workers pull pairs as needed. At roughly $0.50 per pair in the 50-count, the per-use cost is dramatically lower than NRR-equivalent foam once the washing habit is established.

If you're evaluating the full Moldex reusable lineup, our best Moldex earplugs guide benchmarks the Rockets against the Pura-Fit, BattlePlugs, and Jazz Band ranges. For context on where NRR 27 sits in the broader protective landscape, see our NRR hearing protection guide.

Who the Moldex Rockets 6405 Is For

The Rockets 6405 targets workers in moderate industrial noise environments (85–100 dBA TWA) who remove and reinsert hearing protection multiple times per shift. Think assembly line operators, material handlers, machinists, maintenance technicians, and light-construction trades. The corded configuration is especially valuable in:

• Clean rooms and controlled environments where dropped earplugs become contamination risks
• Multi-zone facilities where workers move between loud and quiet areas repeatedly
• Hearing conservation programs that need consistent, documented protection across a large workforce
• Cost-sensitive operations replacing high-volume foam disposable programs

Workers who spend an entire shift in a single high-noise zone and never remove their protection may be better served by a higher-NRR foam option. See our comparison in reusable vs. disposable earplugs.

Strengths of the Moldex Rockets 6405

1. Triple-Flange Design Eliminates Rolling Technique

The single biggest failure mode of foam earplugs in industrial programs is improper insertion. OSHA compliance audits regularly cite inadequate fit from rolling and inserting foam plugs too quickly. The Rockets 6405 uses a three-flange thermoplastic stem that workers push straight into the ear canal without the compress-roll-hold technique. The outermost flange seats against the concha, the middle flange creates the primary seal, and the innermost flange stabilizes the plug axially. This geometry delivers a repeatable acoustic seal regardless of insertion speed — a critical advantage when workers are pulling plugs in and out dozens of times per shift.

For a broader comparison of earplug technologies, see our guide on best earplugs for work.

2. NRR 27 dB — Adequate for the Majority of OSHA-Covered Noise Exposures

Under OSHA 29 CFR 1910.95, employers must provide hearing protection when an employee's time-weighted average (TWA) noise exposure equals or exceeds 85 dBA (action level) or 90 dBA (permissible exposure limit). The standard OSHA derating method divides the labeled NRR by two and subtracts 7 dB: for the Rockets 6405, that yields an estimated real-world reduction of roughly 6.5 dB. NIOSH recommends a more conservative derating of 50% of labeled NRR, producing approximately 13.5 dB of usable attenuation.

At 13.5 dB NIOSH-derated, the Rockets 6405 reduces a 100 dBA exposure to approximately 86.5 dBA — just above the OSHA action level. For exposures consistently at or below 95 dBA, NIOSH-derated NRR 27 provides meaningful compliance margin. For louder environments, consult our NRR guide and consider double protection (earplug + earmuff).

3. Latex-Free Material Supports Diverse Workforces

Latex allergy affects a meaningful minority of workers, and PPE-driven contact dermatitis can become an OSHA recordable incident. The Rockets 6405's thermoplastic flange is fully latex-free, eliminating that exposure. Thermoplastic also maintains flexibility across temperature ranges typical of industrial environments, resisting the stiffening that degrades foam plugs in cold warehouses or outdoor construction sites.

4. Washable Construction Reduces Per-Use Cost

Moldex rates the Rockets as washable and reusable. With daily washing in mild soap and water, a pair can last from several weeks to a couple of months under typical industrial use — far longer than a single-use foam plug. Across a 50-worker crew replacing foam plugs daily, switching to reusable Rockets can reduce annual hearing protection spend significantly. The 50-pair Pocket-Pak stocking format reinforces this: one pak in a dispenser station replaces a box of hundreds of disposables on a per-worker basis.

Explore more cost analysis in our reusable vs. disposable earplugs guide.

5. Corded Configuration Keeps Protection Accessible

The integrated cord serves two functions: it prevents the plug from being lost or contaminated when removed, and it provides a visual reminder that the protection is in-use. In environments with intercom calls, quality checks, or frequent supervisor interaction, workers can pull both plugs to the collar in seconds without pocketing them or setting them on a surface. Cord length is sized to allow comfortable around-the-neck wear without snagging during normal arm movement.

Browse our full corded and uncorded earplugs collection to compare cord configurations across brands.

Limitations to Consider

1. NRR 27 Has a Ceiling in High-Intensity Noise

The Rockets 6405 is not the right sole protection for environments exceeding approximately 100 dBA TWA. At those levels, NIOSH's 50% derating leaves limited compliance margin, and OSHA's engineering controls hierarchy should be the primary remedy. When attenuation beyond what NRR 27 provides is required, the Rockets can be worn under an earmuff (double protection) — a combination that adds approximately 5 dB above the higher-rated device alone per OSHA guidance. See our full hearing protection collection including combination solutions.

2. Hygiene Maintenance Is a Program Requirement

Reusable earplugs require a hygiene protocol that disposables do not. Dirty or degraded flanges can compromise the acoustic seal and introduce skin irritation. An effective hearing conservation program using the Rockets 6405 should include: daily washing guidance, replacement criteria (discard when flanges crack or permanently deform), and accessible replacement stock. Program managers who cannot enforce this should evaluate whether disposables fit their operational model better.

3. Cord Entanglement Risk in Rotating Machinery

OSHA 29 CFR 1910.212 (machine guarding) and many site-specific safety programs prohibit loose cords or lanyards near exposed rotating parts. The Rockets cord should be tucked under a collar or shirt front when working near drills, lathes, conveyors, or mixers. The uncorded Moldex Rockets 6400 is the appropriate choice if cord entanglement is a documented hazard at the facility.

4. Fit Variation for Non-Standard Ear Canal Sizes

Triple-flange designs perform best in average to slightly larger ear canals. Workers with smaller-than-average canals may experience incomplete flange seating, leading to reduced attenuation. Moldex offers a Rockets Small variant for those users. A proper fit test — either qualitative (QLFT) or quantitative (QNFT) — is the only reliable way to confirm adequate attenuation for individual workers, as required under a complete 29 CFR 1910.95 hearing conservation program.

Competitor Comparison: Corded Reusable Earplugs

NRR ratings are manufacturer-labeled per ANSI S3.19. Real-world attenuation depends on fit and usage. See our NRR guide for derating methodology.

Accessories and Program Compatibility

The Rockets 6405 works within a broader hearing conservation infrastructure:

• Dispenser stations: Moldex and third-party earplug dispensers accommodate Pocket-Pak format for centralized distribution points on the shop floor.
• Replacement cord kits: Some Moldex reusable lines offer replacement cords — verify availability for the Rockets series with your distributor.
• Earmuffs for double protection: For noise spikes above 100 dBA, pair the Rockets with an over-ear muff. See hearing protection for compatible earmuffs.
• Fit testing services: 29 CFR 1910.95 requires annual audiometric testing and — for optimal compliance — individual fit testing. Quantitative fit testing (QNFT) with an acoustic test fixture measures real-world attenuation specific to the user's ear canal.

For a complete PPE procurement view, see our full PPE catalog.

OSHA 29 CFR 1910.95 and ANSI S3.19 Standards Context

ANSI S3.19 is the measurement standard that produces the NRR number on every hearing protector label sold in the United States. It uses a controlled laboratory protocol with experienced listeners to establish the mean attenuation at nine test frequencies and compute a single-number rating. Because real-world insertion technique, ear canal geometry, and compliance vary, measured field attenuation consistently falls below the lab NRR — which is why both OSHA and NIOSH apply derating factors.

OSHA 29 CFR 1910.95 governs occupational noise exposure in general industry. It requires:

• A hearing conservation program when noise exceeds 85 dBA TWA
• Employer-provided hearing protection (at no cost to the employee) when TWA reaches 90 dBA or above
• Annual audiometric testing
• Training on hearing protector use, care, and limitations
• Selection of hearing protection that reduces worker exposure to at least 90 dBA, or to 85 dBA if the worker shows standard threshold shift

For program setup guidance, see our hearing conservation program guide. For how to select the right NRR, our NRR guide walks through OSHA and NIOSH derating step-by-step.

Total Cost of Ownership: Rockets 6405 vs. Disposable Foam

The Pocket-Pak 50-pair format is priced at approximately $24.93 per pack (roughly $0.50/pair). A comparable-quality corded foam disposable runs $0.15–0.25 per unit, but is discarded after each use. The break-even point for the Rockets depends on how many times a pair is washed and reused before replacement.

• At 10 reuses per pair: effective cost ~$0.05/use — 3–5x cheaper than foam disposables
• At 20 reuses: effective cost ~$0.025/use — comparable to bulk-bin foam programs
• Disposal/waste cost: zero (no daily discards, reduced earplug litter on the floor)
• Compliance benefit: consistent push-to-seat insertion reduces fit errors and associated hearing conservation program liability

Program managers running a hearing conservation program for 50+ workers should factor in dispensing station costs, washing station logistics, and replacement stock availability when evaluating the Rockets against disposable alternatives. Our best earplugs for work guide includes a full cost-per-shift breakdown.

Final Verdict

The Moldex Rockets 6405 Corded Reusable Earplugs NRR 27 Pocket Pak 50 Pairs earns a 4.2 out of 5 for industrial hearing conservation programs. The no-roll triple-flange design removes the primary failure mode of foam earplugs. The corded configuration solves the lost-earplug problem in dynamic work environments. Latex-free material protects workers with sensitivities, and the Pocket-Pak format is purpose-built for centralized dispensing at scale.

The limitations are real but narrow: NRR 27 has a ceiling, the cord requires awareness near rotating equipment, and any reusable program demands a hygiene protocol. None of these are disqualifying for the target application — they are simply scope boundaries that a responsible hearing conservation program accounts for in writing.

For moderate industrial noise (85–100 dBA), in-and-out insertion frequency, and cost-conscious bulk procurement, the Rockets 6405 is among the strongest purpose-matched options in the market.

Amazon link is affiliate — WC Safety may earn a commission at no cost to you. Price verified at time of writing; subject to change.

Frequently Asked Questions

What is the NRR of the Moldex Rockets 6405?

The Moldex Rockets 6405 is rated NRR 27 dB per ANSI S3.19 laboratory testing. Under NIOSH's recommended 50% derating, real-world attenuation is estimated at approximately 13.5 dB.

Are the Moldex Rockets 6405 reusable?

Yes. The Rockets 6405 is a washable, reusable earplug. Moldex recommends cleaning with mild soap and water and inspecting flanges before each use. Replace when flanges crack, permanently deform, or lose flexibility.

What is the difference between the Moldex Rockets 6400 and 6405?

The Rockets 6400 is uncorded; the Rockets 6405 is corded. Both share the same NRR 27 triple-flange design and latex-free thermoplastic material. Choose 6400 for continuous-wear situations or where cord entanglement is a hazard.

Are the Moldex Rockets 6405 latex-free?

Yes. The Rockets 6405 flanges are made from thermoplastic — fully latex-free — making them appropriate for workers with latex sensitivities or allergies.

How many pairs come in a Pocket-Pak?

The Moldex Rockets 6405 Pocket-Pak contains 50 pairs, packaged with a carrying case suitable for shop-floor dispenser stations or individual stocking.

Does OSHA require hearing protection at NRR 27?

OSHA 29 CFR 1910.95 requires hearing protection that reduces employee exposure to at least 90 dBA (or 85 dBA for workers with standard threshold shift). Whether NRR 27 achieves this depends on baseline noise levels and the derating method used. Consult our hearing conservation program guide for a compliance walkthrough.

Can I wear the Moldex Rockets 6405 under an earmuff?

Yes. Double protection (earplug plus earmuff) is appropriate for exposures exceeding the range of a single hearing protector. OSHA guidance indicates combined protection adds approximately 5 dB above the higher-rated single device. See our best hearing protection guide for double-protection recommendations.

How long does a Moldex Rockets 6405 pair last?

With daily washing, a pair typically lasts from several weeks to a couple of months under normal industrial use. Lifespan depends on frequency of removal, exposure to chemicals, and whether flanges are inspected and replaced when degraded.

Is the Moldex Rockets 6405 appropriate for food processing?

No. The Rockets 6405 is not metal-detectable. Food and pharmaceutical facilities with metal-detection requirements should use the Rockets 6415, which is engineered with a metal-detectable compound and brightly colored for visual inspection.

What does the GTIN 0092311640501 identify?

GTIN 0092311640501 is the Global Trade Item Number for the Moldex Rockets 6405 Corded Pocket Pak 50 Pairs. It is used for inventory management, procurement systems, and regulatory documentation under EPA 40 CFR Part 211 labeling requirements.

How do I insert the Moldex Rockets 6405 correctly?

Reach over the head with the opposite hand to straighten the ear canal, then push the earplug straight into the canal until the outer flange rests against the concha. No rolling or holding in place is required — the triple-flange design seats on insertion.

Can the Rockets 6405 be used outdoors?

Yes. The thermoplastic material maintains flexibility across temperature ranges typical of outdoor construction environments. Avoid extended use in extreme cold where prolonged temperature exposure could temporarily stiffen the flanges.

Is the Moldex Rockets 6405 compliant with ANSI S3.19?

Yes. The NRR 27 rating is measured under ANSI S3.19, as required by EPA 40 CFR Part 211 for all hearing protectors sold in the United States.

What is the Moldex Rockets 6415 and how does it differ from the 6405?

The Rockets 6415 shares the NRR 27 triple-flange corded design but is manufactured with a metal-detectable compound and is brightly colored. It is intended for food processing, pharmaceutical, and other controlled environments with contamination-detection requirements.

Are the Moldex Rockets a good choice for a hearing conservation program?

Yes, for moderate-noise programs (85–100 dBA). The push-to-seat design reduces fit errors, latex-free material prevents allergic reactions, and the Pocket-Pak format supports bulk dispensing. Programs should still include fit testing per 29 CFR 1910.95 and a defined replacement schedule. See our hearing conservation program guide.

How does NRR 27 compare to foam earplugs?

Maximum-rated foam earplugs reach NRR 33. The Rockets 6405 at NRR 27 provides less laboratory-measured attenuation but often delivers equivalent or better real-world protection because the push-to-seat design is less technique-dependent than the roll-and-hold method required for foam. For a full breakdown, see best foam earplugs and reusable vs. disposable earplugs.

Where can I buy the Moldex Rockets 6405 in bulk?

WC Safety stocks the 50-pair Pocket-Pak with fast shipping. For larger-volume orders, contact the WC Safety B2B team. The product is also available on Amazon under ASIN B00002N69P.

What hearing protection should I use if noise exceeds 100 dBA?

For environments above 100 dBA TWA, consider double protection (Rockets 6405 plus a compatible earmuff), or a higher-NRR foam earplug. See our best hearing protection guide and our full hearing protection collection for options.

Reviewed by Steven Eaton
Steven Eaton is the founder and head of the WC Safety editorial team with over a decade of industrial PPE sourcing and safety compliance experience. He holds ongoing training in OSHA general industry standards and maintains relationships with major PPE manufacturers including Moldex, 3M, and Honeywell.
WC Safety Editorial Team | WC Safety, Industrial PPE Specialists

Review Methodology

WC Safety product reviews follow a standardized methodology aligned with our editorial standards:

1. Specifications verified against the manufacturer product page and published data sheets
2. Regulatory claims cross-referenced with ANSI S3.19, EPA 40 CFR Part 211, OSHA 29 CFR 1910.95, and NIOSH Pub. 98-126
3. NRR derating calculations performed using both OSHA (div 2 minus 7) and NIOSH (50% of NRR) methods
4. Competitor comparison based on independently published NRR labels and publicly available product information
5. No claim is made that is not traceable to a verifiable source

For questions about our editorial process, contact the WC Safety team through our website.