Moldex 6455 Jetz Review — NRR 27 Corded Reusable Earplug, 50 pairs
WC Safety Editorial Verdict: 4.4/5
WC Safety Editorial Verdict: 4.4/5. The Moldex 6455 Jetz earns its score as the corded version of the softest, most visible flanged plug in the Moldex line — push-in NRR 27 protection that seats consistently even with gloves, plus a retention cord that keeps doffed pairs off the floor for intermittent wearers. It is not a maximum-attenuation plug, so for the loudest tasks step up to a NRR 33 ear plug or roll-down foam ear plug; for steady all-shift wear without snag risk, the uncorded Jetz is the better buy. Confirm your required attenuation first with our how to calculate the NRR you need walkthrough.
Is the corded Moldex 6455 Jetz the right soft, hi-viz plug for your floor?
Short answer: Choose the Moldex 6455 when you want the Jetz's extra-soft, low-pressure comfort and hi-viz neon visibility plus a cord to keep removed pairs off the floor. It's the same NRR 27, NIOSH-approved, PVC-free soft triple-flange plug as the 6450, with a retention cord added for workers who frequently doff and don. If your crews wear plugs all shift or work near rotating machinery where a cord could snag, the uncorded 6450 is the better call.
Moldex 6455 Jetz Review — NRR 27 Corded Reusable Earplug (2026)
The Moldex 6455 is the corded Jetz: the softest, most visible reusable in the Moldex line with a tether attached. It's built for the common middle ground — workers who want the comfort and compliance advantages of the Jetz but also take plugs in and out during the day and don't want to lose them. The plug is unchanged from the 6450; the cord is the whole story, and this review treats it that way rather than restating shared specs.
Pros
- Retention — the cord keeps a removed pair at the neck and off the floor for workers who frequently remove plugs.
- Extra-soft low-pressure seal — the same gentle, all-shift Jetz comfort that keeps plugs worn.
- Hi-viz neon swirl — fast visual compliance checks across a floor, now with a cord that's also easy to spot.
- PVC-free TPE, value priced — soft material and economical cost, at full NRR 27 protection.
- Around-neck readiness — plugs hang ready during quiet moments and are back in in seconds.
Cons
- Cord is a snag hazard near rotating or moving equipment — the uncorded 6450's territory.
- Soft plug seating — some users prefer a firmer stem for a positive insertion feel.
- NRR 27, not 33 — below maximum-rated foam in the loudest tasks.
- Reusable upkeep — clean and inspect to maintain the seal.
Editorial Review Scorecard Moldex 6455 Jetz
| Noise Reduction Rating | 4.0 NRR 27; solid protection; below NRR 33 foam maximum |
| Comfort | 4.4 extra-soft TPE+foam hybrid; highest comfort in Moldex reusable lineup |
| Ease of Insertion | 5.0 push-in flanged design; no rolling; consistent across hand conditions and glove use |
| NIOSH Compliance | 5.0 NIOSH approved 42 CFR 84 / 29 CFR 11.57 |
| Value for Money | 4.8 higher per-unit cost offset by multi-use longevity; lower total cost than disposable for frequent earplug wearers |
| Overall | 4.4 / 5 |
Who the corded 6455 is for
This is the comfort-plus-retention Jetz. It fits:
- Intermittent wearers — inspectors, supervisors, dock and warehouse crews who pull plugs to talk and want them retained and ready.
- Comfort-sensitive workers who need the soft low-pressure Jetz feel but also a tether against loss.
- Compliance-driven floors wanting the neon visibility plus a cord that keeps pairs from disappearing.
- Value rollouts that want corded retention at the economical Jetz price.
Step to the uncorded 6450 for all-shift continuous wear or rotating-machinery zones, where a cord is unnecessary or hazardous.
Corded vs. uncorded Jetz: matching the cord to the task
Because the plug is identical to the 6450, the entire decision is whether you want the cord — and that comes down to how often plugs leave the ears. Workers who remove protection repeatedly to communicate benefit enormously from a tether: a soft, hi-viz pair is easy to find at the neck and quick to re-seat, so plugs stay with the worker instead of getting set down and lost. For a value-priced reusable, preventing loss is also where the cord pays for itself.
The cost is the familiar snag risk. A neck cord near a lathe, drill, conveyor or mixer is a recognized catch point, so the 6455 belongs on assembly, inspection, warehouse and maintenance floors rather than at the rotating machine — that's exactly where the uncorded 6450 takes over. The plug's comfort and visibility are the same either way; let the equipment around the worker pick the cord.
Fit and attenuation
Insert the 6455 by the stem, easing the soft triple flanges into the canal until sealed — no rolling. NRR 27 is the labeled protection; after standard OSHA derating it provides comfortable mid-teens effective attenuation for the 90–100 dBA noise typical of general industry. Above roughly 105 dBA, add a muff for dual protection rather than expecting a single plug to do more.
Limitations of the 6455 specifically
Snag risk near machinery
The retention cord is a catch point on rotating equipment; use the uncorded 6450 there.
Soft-plug seating preference
As with the 6450, a few users prefer the firmer Alphas stem for a more positive insertion.
Where the 6455 sits in the Moldex reusable range
- 6455 — Jetz corded (this review): soft, hi-viz, value plug with a retention cord for intermittent wearers.
- 6450 — Jetz uncorded: same soft hi-viz plug, no cord, for all-shift wear and machine zones.
- Alphas (6430/6434/6435/6436): firmer flange; cloth-cord and metal-detectable options.
- Rockets (6400 series): cushioned air-bubble tip; camo and detectable options.
Browse all Moldex earplugs and hearing protection.
OSHA 29 CFR 1910.95 — how the 6455 fits a conservation program
At or above an 85 dBA 8-hour TWA you must run a hearing-conservation program and provide effective protectors at no cost; the NIOSH-approved NRR 27 6455 qualifies. It combines three program advantages: comfort that improves real-world wear time, neon visibility that simplifies verification, and a cord that keeps protectors with the worker between uses — all at a value price for broad deployment.
Care and service life
Wash the plug in warm soapy water, rinse, air-dry and store in its case; wipe the cord clean as needed. Inspect the soft flanges for tears or stiffening before reuse and retire pairs that won't seal — and handle the soft plug gently rather than pulling it by the flanges. Kept clean, a pair lasts weeks to a couple of months.
Final verdict: Moldex 6455 Jetz Corded
The 6455 is the Jetz for workers who want soft, hi-viz, value-priced protection that also stays tethered. It keeps the comfort and compliance strengths that make the Jetz worth choosing and adds retention for intermittent wearers, at the cost of a cord that must stay away from rotating machinery. Pick it for assembly, inspection and warehouse floors; choose the uncorded 6450 for continuous wear or around spinning equipment.
Related guides & products
Frequently Asked Questions — Moldex 6455 Jetz Corded
What does the 6455 add over the uncorded 6450?
A retention cord. Same soft, hi-viz, NRR 27 Jetz plug; the cord keeps a removed pair at the neck for workers who frequently take plugs out.
Can I wear the 6455 near rotating machinery?
Not recommended — the cord can snag on spinning equipment. Use the uncorded 6450 there.
Why choose Jetz over Alphas or Rockets?
For the softest, lowest-pressure feel, hi-viz compliance color, and the lowest price among the reusables. Alphas is firmer; Rockets has a cushioned bullet tip.
What is the NRR of the Moldex 6455?
NRR 27 dB — the same across Moldex's reusable families.
Are the 6455 reusable and PVC-free?
Yes — soft PVC-free TPE, washable and reusable. Clean, dry, inspect, and replace when flanges stiffen or tear.
What OSHA standard applies?
29 CFR 1910.95. The NIOSH-approved NRR 27 6455 satisfies the requirement to provide effective hearing protectors in a conservation program.
Pros & Cons
Pros
- Retention cord keeps removed pairs at the neck and off the floor, ideal for inspectors and supervisors who doff and don repeatedly through a shift
- Extra-soft, low-pressure TPE/foam-hybrid seal that workers tolerate for full shifts, improving real-world worn time and compliance
- Flanged push-in insertion needs no roll-down, so it seats consistently with gloves, dirty hands, or untrained users
- Hi-viz neon swirl makes across-the-floor compliance checks fast, and the cord adds a second visual cue
- NIOSH-approved (42 CFR 84) at NRR 27, valid for OSHA 1910.95 hearing conservation programs
- Washable and reusable, lowering per-wear cost versus single-use foam for frequent wearers
Cons
- The cord is a snag hazard near rotating or moving equipment, where an uncorded plug is the safer choice
- NRR 27 sits below maximum-rated NRR 33 foam, so it is not the pick for the very loudest tasks
- Soft, low-pressure stem gives a gentler insertion feel that some users read as a less positive seal
- Reusable design requires routine cleaning and inspection to keep the flanges sealing properly
Who It's For
Buy it if:
- Intermittent wearers like inspectors, supervisors, dock and warehouse crews who pull plugs to talk and want them retained and ready
- Comfort-sensitive workers who need an extra-soft, low-pressure plug they will actually keep in all shift
- Compliance-driven floors that want neon visibility plus a cord that stops pairs from disappearing
- Glove-wearing or untrained users who benefit from a no-roll-down push-in plug
- Value-focused rollouts wanting corded retention in a reusable, washable plug
Look elsewhere if:
- Workers near rotating or moving machinery, where a cord can snag and the uncorded Jetz is the safer pick
- Crews on the very loudest tasks who need maximum attenuation closer to NRR 33
- Continuous all-shift wearers who never remove plugs and gain nothing from the cord
- Teams who prefer a firm-stem foam plug and the positive, expanding seal feel of roll-down foam
Related Resources
- foam ear plugs
- hearing protection
- nrr 33 ear plugs
- reusable earplugs
- disposable ear plugs
- what is nrr noise reduction rating explained
- best foam ear plugs
- highest nrr ear plugs
- ear plugs vs ear muffs
- how to insert foam earplugs
- how to calculate the nrr you need
- moldex 6604 sparkplugs
- moldex 6654 sparkplugs corded
- moldex 6615 sparkplugs metal detectable
- moldex 6684 sparkplugs jar
- moldex 6800 pura fit
- moldex 6900 pura fit corded
- moldex 6600 softies
- moldex 6650 softies corded
Frequently Asked Questions
What real-world protection does the 6455's NRR 27 actually give me?
NRR 27 is a laboratory value measured under ANSI S3.19 and field protection is always lower. NIOSH recommends derating an earplug's labeled NRR by 25 percent, which puts the 6455 at roughly NRR 20 in practice. The OSHA estimate, (NRR minus 7) divided by 2, lands near 10 dB. Use the derated figure when you compare your worker's exposure against the 85 dBA action level and 90 dBA PEL under OSHA 1910.95. Our what is NRR noise reduction rating explained guide walks through the math.
How do I know if NRR 27 is enough for my noise level?
Subtract your derated attenuation from your measured TWA exposure and confirm the result falls at or below 85 dBA. For most general-industry settings in the 90 to 100 dBA range, the 6455's derated protection is sufficient, but very loud tasks above roughly 105 dBA may need a higher-rated plug or dual protection. Run your specific numbers with our how to calculate the NRR you need walkthrough before standardizing on any plug.
Should I choose the corded 6455 or the uncorded 6450 Jetz?
Pick the corded 6455 when workers frequently pull plugs to talk and you want them retained at the neck and off the floor, which is typical for inspectors, supervisors, and dock crews. Choose the uncorded 6450 for continuous all-shift wear or near rotating machinery where a cord could snag. The plug, seal, and NRR 27 are identical between them, so the cord is the only decision factor.
How is the 6455 Jetz different from the Moldex 6604 SparkPlugs?
Both are reusable push-in flanged plugs, but the Jetz uses an extra-soft, low-pressure TPE design tuned for all-shift comfort, while the Moldex 6604 SparkPlugs use a firmer stem that some workers prefer for a more positive insertion feel. Choose the Jetz for comfort-sensitive crews and the SparkPlugs when users want a stiffer, easier-to-seat stem. For the corded SparkPlugs equivalent, compare the Moldex 6654 SparkPlugs corded.
Reusable flanged like the 6455 or single-use foam, which is better for my crew?
Reusable flanged plugs like the 6455 push in without rolling, seat consistently with gloves, and cost less per wear for frequent users, but they need cleaning and top out at NRR 27 here. Single-use foam ear plugs reach higher NRRs up to 33, suit dusty or one-and-done environments, and need no upkeep, but require correct roll-down technique. Match the format to whether your workers wear plugs continuously, intermittently, or in dirty conditions.
Is the 6455 metal detectable for food or pharma lines?
No. The standard 6455 Jetz is not metal detectable, so it is not the right plug for food, beverage, or pharmaceutical environments that require detectable PPE for foreign-object control. For those lines, choose a purpose-built detectable plug such as the Moldex 6615 SparkPlugs metal detectable, which is engineered for HACCP-style detection programs.
How long can I reuse a pair of 6455 Jetz before replacing them?
Reusable Jetz pairs can be washed and reworn over multiple shifts as long as the flanges stay soft, pliable, and intact. Replace them when the material hardens, tears, discolors permanently, or no longer holds a clean seal, and never reinsert a plug that has been dropped on a dirty floor without cleaning. Routine inspection at each insertion is part of keeping the labeled protection valid.
How do I clean and maintain the 6455 to keep the seal working?
Wash the flanges with mild soap and warm water, rinse thoroughly, and let them air dry before storing in a clean case rather than a pocket. Avoid solvents or alcohol that can degrade the soft TPE. Cleaning matters because the 6455's protection depends on intact, supple flanges; a stiffened or grime-coated plug will not seat fully and loses attenuation regardless of the NRR on the box.
Will the cord on the 6455 reduce the noise protection?
No. The retention cord is purely a tether and does not change how the plug seals or its NRR 27 rating, which is identical to the uncorded 6450. The only consideration is snag safety: the cord is a benefit for intermittent wearers but a liability near rotating equipment, so base the corded-versus-uncorded choice on your work environment, not on attenuation.
Is the 6455 comfortable enough for workers who reject other plugs?
The Jetz is the softest, lowest-pressure plug in the Moldex reusable line, which makes it a strong rescue option for workers who complain that firmer foam or stiffer flanged plugs feel tight or cause soreness. Because comfort drives real-world worn time, a plug a worker keeps in at NRR 27 often protects better than a higher-rated plug they pull out. Still, fit is individual, so trial it before a full rollout.
How does the 6455 compare to a roll-down foam plug like the Moldex Pura-Fit?
The 6455 is a no-roll push-in plug that seats fast and resists dirty-hand contamination, but tops out at NRR 27. The Moldex 6800 Pura-Fit is a roll-down foam plug rated NRR 33, offering more attenuation when inserted correctly but depending on proper technique. Choose the Jetz for convenience and consistency, the Pura-Fit for maximum protection; the corded foam equivalent is the Moldex 6900 Pura-Fit corded.
Should I use the 6455 or step up to ear muffs or dual protection?
For exposures the 6455's derated NRR covers, a comfortable plug workers keep in is usually the better single solution. When measured noise stays high even after derating, consider hearing protection muffs or combining plugs with muffs for dual protection. Our ear plugs vs ear muffs comparison explains when each format and combination makes sense for your noise level and task.
Is the 6455 a good value compared with disposable foam plugs?
For frequent, intermittent wearers the reusable 6455 typically wins on total cost because one washable pair replaces many single-use plugs, and the cord cuts replacement-from-loss. If workers wear plugs once and discard them, or you need maximum NRR, bulk disposable ear plugs can be cheaper per shift. Base the comparison on how often each worker reuses versus discards, not just unit price.
Does the 6455 satisfy OSHA hearing conservation program requirements?
Yes. The 6455 is NIOSH approved under 42 CFR 84 and carries a labeled NRR, so it is an acceptable control within an OSHA 1910.95 hearing conservation program once you confirm its derated attenuation reduces worker exposure at or below the limits. Remember that the program also requires noise monitoring, training, and audiometric testing; a compliant plug is one part of that system, not the whole of it.
Who should pick the 6455 over the Moldex Softies plug?
The 6455 Jetz is the better pick when you want hi-viz neon visibility, a retention cord, and the softest reusable seal for intermittent wearers. The Moldex 6600 Softies is a different comfort-focused option, with a corded version in the Moldex 6650 Softies corded. Choose by which seal feel and visibility your crew prefers; if you need the highest possible attenuation instead, browse our highest NRR ear plugs guide.
Why trust WC Safety
Industrial PPE specialists. We do not accept manufacturer payment for placement.
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.
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.
Ratings combine published specs, hands-on familiarity, and verified customer data where available; we do not fabricate lab tests.
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