Moldex 6945 Glide Review — NRR 30 Corded Twist-In Foam Earplug, 100 pairs
Moldex 6945 Glide Corded Review: Is the Corded Twist-In Earplug the Right Choice for Frequent-Removal Industrial Environments?
The Moldex 6945 Glide Corded is the corded version of Moldex's top-selling Glide NRR 30 twist-in foam earplug. The flexible connecting cord is the only difference from the uncorded 6940 — same foam, same NRR 30 rating, same NIOSH approval, same twist-in insertion. The cord prevents earplug loss during brief noise breaks, keeps both plugs together when hanging around the neck, and prevents earplugs from falling into machinery or food product during temporary removal.
Editorial Verdict — Moldex 6945 Glide Corded: 4.6/5
NRR 30 twist-in foam with cord — the correct choice when loss prevention during brief-removal breaks is a priority. Identical protection to uncorded 6940. Particularly valuable in operations where workers move frequently between noisy and quiet zones.
NRR 30 twist-in foam with cord — the correct choice when loss prevention during brief-removal breaks is a priority. Identical protection to uncorded 6940. Particularly valuable in operations where workers move frequently between noisy and quiet zones.
Specifications
| Feature | Details |
|---|---|
| Model | 6945 |
| NRR | 30 |
| Insertion Type | Twist-in (no rolling required) |
| Corded | Yes |
| Package Count | 100 pairs |
| NIOSH Approval | 29 CFR Part 11.57 |
| Effective Protection | 11.5 dB(A) per OSHA method |
When the Cord Makes a Measurable Difference
Earplug loss is a significant cost in high-volume hearing conservation programs. A worker who removes uncorded earplugs and places them in a pocket often loses them — the replacement cost compounds across large workforces. Corded earplugs hang around the neck when removed, dramatically reducing loss rates. For facilities tracking hearing protection consumption per worker, switching from uncorded to corded typically reduces replacement frequency by 30-50%.
The cord also matters for machine-operation safety: an uncorded earplug dropped near rotating equipment becomes a foreign object. A corded earplug that is removed remains attached to the worker. In food processing environments, earplugs that fall into product are a contamination incident; corded earplugs that hang around the neck eliminate this risk during brief removals.
Glide Corded vs. Mellows Corded: Which Corded Earplug is Right?
| Feature | 6945 Glide Corded vs. 6840 Mellows Corded |
|---|---|
| Insertion type | Twist-in vs. Roll-and-insert |
| Foam type | Standard PU vs. Thermosensitive PU |
| Best for | No-roll environments, hygiene-sensitive |
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 NIOSH-approved earplug carries an NRR — the Noise Reduction Rating tested per ANSI S12.6 Method A (experimenter-supervised fit). Understanding how NRR translates to real-world protection is critical for compliance:
- OSHA method (50% derating): Effective dB = (NRR − 7) ÷ 2. For NRR 30: (30 − 7) ÷ 2 = 11.5 dB effective attenuation
- NIOSH method (75% derating for foams): Even more conservative — NIOSH recommends assuming only 25% of labeled NRR in real programs
- 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.
Foam Earplug Insertion Technique: The Difference Between Full and Half Protection
Improper insertion is the single largest cause of earplug underprotection in hearing conservation programs. Studies have shown that workers who believe they are properly wearing foam earplugs often achieve only 50-60% of labeled NRR. Proper technique:
- Step 1 — Clean hands: Dirty hands introduce bacteria into the ear canal; always insert with clean hands
- Step 2 — Roll (for roll-and-insert types): Roll the earplug into a tight, thin cylinder — tighter is better for deep insertion and proper expansion
- Step 3 — Pull the ear: Reach over your head with the opposite hand and pull the top of your ear back and upward; this straightens the ear canal for deeper, more sealed insertion
- Step 4 — Insert deeply: Insert the rolled earplug deep enough that the end sits at or below the ear canal entrance; deep insertion is critical for achieving labeled NRR
- Step 5 — Hold: Keep holding the earplug in place for 20-30 seconds while the foam expands and fills the canal
- Step 6 — Check fit: Cup both hands over your ears and release — properly seated earplugs will produce a noticeable hollow, muffled sound change. If you hear little difference, reinsert
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 6945 Glide Corded the same as 6940 Glide except for the cord?
A: Yes — identical NRR 30, same foam formulation, same twist-in insertion system, same NIOSH approval. The cord is the only difference. Choose corded for environments with frequent brief removals or where earplug loss is a cost concern.
Q: Does the cord affect protection in any way?
A: No — the cord attaches to the outer end of each earplug and does not affect the foam's expansion in the canal or the level of attenuation achieved.
Q: Can the cord get caught in machinery?
A: Cords should be worn under clothing or behind the neck when working around rotating equipment. Most industrial corded earplug cords are designed to break away under significant tension rather than entangle. Check your employer's specific PPE policies for rotating equipment work.
Q: What NRR do I need for jackhammer work?
A: Jackhammers produce approximately 100-115 dB(A). NRR 30 earplugs (11.5 dB effective OSHA method) cover up to 101.5 dB(A). For 105+ dB(A) exposures, double protection (NRR 30 earplugs + earmuffs) is recommended. The effective dual protection adds approximately 5 dB beyond the higher-rated device.
Q: How does NRR 30 compare to NRR 33?
A: NRR 33 provides (33−7)÷2 = 13 dB effective attenuation vs. 11.5 dB for NRR 30 — only 1.5 dB more. This relatively small difference means NRR 30 is appropriate for most industrial environments. If you are at the margin (100-102 dB(A) exposure), NRR 33 provides additional safety margin. The Moldex 6680 Soothers (NRR 33) is available for higher-exposure environments.
Q: Is the 6945 Glide Corded food-safe for use in food processing?
A: Moldex earplugs are not food contact items — they are PPE. They do not come into contact with food product when worn correctly. The corded design reduces the risk of earplug loss into food by keeping earplugs attached to the worker. For food safety program specifics, consult your food safety coordinator.
Q: Are there twist-in earplugs with higher NRR?
A: The Moldex 6980 Glide Soothers combines the Glide twist-in system with the higher-attenuation Soothers foam at NRR 33. See 6980 Glide Soothers for NRR 33 + twist-in insertion combination.
Q: Do OSHA inspectors check earplug insertion during site visits?
A: OSHA compliance officers may observe workers during inspections and assess whether hearing protection is worn correctly. Improperly inserted earplugs observed during an OSHA inspection can be cited as failure to provide adequate hearing protection even if earplugs were distributed. Training on proper insertion technique is part of the required Hearing Conservation Program.
Q: What is a Standard Threshold Shift (STS) and what triggers it?
A: Under OSHA 1910.95, a STS is a change of 10 dB or more in average hearing threshold at 2000, 3000, and 4000 Hz in either ear compared to baseline audiogram. When STS is detected, the employer must re-evaluate hearing protection adequacy, re-fit the employee in better protection, and refer to a physician if needed.
Q: Can I wear earplugs and still communicate at work?
A: At NRR 30, speech communication becomes more difficult but not impossible. Workers in high-noise environments often develop adaptive communication strategies. For environments requiring frequent verbal communication, level-dependent earplugs or tactical communications earplugs may be more appropriate than standard NRR 30 foam.
Q: What should I do if earplugs cause ear pain?
A: Ear pain from earplugs is usually caused by: inserting too fast before foam has been rolled small enough; an earplug too large for the canal; or active ear canal irritation. Slow the insertion, try a smaller earplug size or different style, or consult a physician if pain persists. Some workers find thermosensitive foam (Mellows line) more comfortable than fast-expanding foam.
Q: How do I dispose of corded earplugs?
A: Dispose of corded earplugs as solid waste in non-hazardous environments. The cord is a non-recyclable polymer in most recycling programs. In environments where earplugs may be contaminated with hazardous materials, consult your safety team for proper disposal.
Q: Is the 6945 Glide Corded sold as individual pairs or in a box?
A: The 6945 is sold in a 100-pair box with individually wrapped pairs. For jar-format Glide earplugs, see the 6686 Glide Jar (50 pairs).
Q: Where can I buy Moldex 6945 Glide Corded earplugs?
A: Available at WC Safety. Browse all Moldex earplugs.
Q: What is OSHA's requirement for documenting earplug issuance?
A: OSHA 1910.95 does not specifically require individual earplug issuance documentation, but it does require that records of the hearing conservation program be maintained. Many employers document hearing protection type issued per employee as part of audiometric records and fit documentation. Individually packaged corded earplugs (like 6945) can facilitate this tracking.
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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.
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.