Key Features

• NRR 27 protection: Alphas earplugs achieve NRR 27 — effective 10.0 dB(A) attenuation after OSHA's (NRR−7)÷2 derating — protecting workers in environments up to 100 dB(A) without dual protection.
• Reusable and washable: Flanged TPE construction withstands repeated washing with soap and water. One pair can last weeks to months with proper care, significantly reducing per-use cost versus disposable foam.
• No rolling required: Pull the outer ear up and back to straighten the canal, then insert the triple-flange tip until the outermost flange is flush with the ear canal opening. No foam pre-compression means faster insertion, especially for workers with gloved hands.
• Uncorded: No cord — preferred for continuous-wear workers who keep earplugs inserted throughout the full shift.
• Moldex USA manufacturing: PVC-free, latex-free materials. Full NIOSH/ANSI compliance.

Reusable vs. Disposable Earplugs — When to Choose Each

Disposable foam earplugs (Moldex SparkPlugs, Pura-Fit, Meteors, Softies, etc.) offer the highest NRR ratings (up to NRR 33) and the lowest per-pair cost when purchased in bulk. They are preferred when workers lose or damage earplugs frequently, hygiene policies require fresh earplugs each shift, or the workforce is variable (contractors, visitors).

Reusable flanged earplugs like the Alphas are the better choice when:

• Workers have consistent schedules and can be responsible for their own pair
• Gloved hands make foam rolling difficult or impractical
• Workers find foam earplugs uncomfortable after long wear (flanged tips exert less canal pressure than compressed foam)
• Per-shift cost is a priority and the workforce is stable
• Environmental conditions (heat, dust) degrade disposable foam quickly

Note: Reusable earplugs have lower NRR ratings (NRR 27) than top-tier disposable foam (NRR 33). For environments above 100 dB(A), consider either dual protection or switching to a higher-NRR disposable foam earplug.

Applications

• Manufacturing and heavy industry: Reusable format suits fixed-site workers with defined noise exposure patterns and consistent daily schedules.
• Construction: Uncorded for continuous-wear in sustained high-noise construction environments.
• Mining and utilities: Flanged design performs reliably even when hands are gloved, dirty, or wet — conditions where foam rolling is inconsistent.
• Military and law enforcement training: Reusable format supports repeated use in firearms training and range environments.
• Healthcare and laboratories: Non-foam flanged design does not shed fibers and is easier to inspect for cleanliness than used foam.

How to Insert Alphas Earplugs Correctly

Pull the outer ear up and back to straighten the canal, then insert the triple-flange tip until the outermost flange is flush with the ear canal opening.

To check fit: cup your hands over both ears — if ambient sound becomes noticeably quieter, the seal is good. If you hear a significant difference between hands-on and hands-off, one or both earplugs may not be fully seated. Re-insert and test again.

Inspect earplugs before each use. Replace if flanges are torn, deformed, hardened, or if the stem is cracked. Do not use earplugs that have visible contamination that cannot be washed off.

Care and Maintenance of Reusable Earplugs

• Washing: Rinse with warm water and mild soap after each use. Rinse thoroughly to remove soap residue. Air dry completely before storage.
• Storage: Store in a clean, dry case or bag — earplugs stored loose in pockets collect debris that degrades the flanged seal. Keep away from solvents, oils, and extreme heat which degrade TPE.
• Inspection: Check flanges for cracks or deformation before each shift. Flanged earplugs that cannot form a complete seal must be replaced — do not use damaged reusable earplugs.
• Replacement: Replace when flanges show visible wear, when insertion no longer produces a firm seal, or if the earplug has been dropped in a hazardous environment and cannot be cleaned. Most reusable earplugs last several months with proper care.

NRR 27 Noise Reduction — What It Means in Your Environment

For environments above 100 dB(A), dual protection (earplugs plus earmuffs simultaneously) is required. If your noise environment frequently exceeds 100 dB(A), consider the Moldex disposable foam families with NRR 33 (effective 13 dB(A)) for single-protector coverage to higher levels.

Other Alphas Configurations

Moldex Reusable Earplug Family Comparison

Browse the full Moldex Earplug Collection or use the Moldex Earplug Selection Guide to compare reusable and disposable options for your hearing conservation program.

OSHA 29 CFR 1910.95 Hearing Conservation Compliance

OSHA 29 CFR 1910.95 requires a hearing conservation program when workers are exposed to noise at or above 85 dB(A) TWA (the action level). At or above 90 dB(A) TWA (the PEL), engineering controls and hearing protection are mandatory.

Key program requirements relevant to reusable earplug programs:

• Fit and training: Workers must be trained on proper insertion technique. Flanged earplugs require less technique than foam rolling but still require correct seating to achieve rated NRR.
• Condition inspection: Workers should inspect reusable earplugs before each shift — damaged or degraded earplugs must be replaced. Maintain replacement inventory.
• Adequate attenuation: Selected earplugs must reduce effective exposure to at or below the PEL (90 dB(A)) after OSHA derating. Alphas NRR 27 protects to 100 dB(A).
• Audiometric testing: Annual hearing tests for all workers at or above the Action Level (85 dB(A) TWA).

Contact WC Safety for bulk pricing on reusable earplug programs, replacement inventory sourcing, or help selecting between reusable and disposable formats for your facility's specific noise profile.

Frequently Asked Questions

How is a reusable flanged earplug different from a disposable foam earplug?

Disposable foam earplugs are compressed (rolled), inserted, and expand to fill the canal — providing a very high NRR (up to 33) but single-shift use only. Flanged earplugs like the Alphas use rigid TPE flanges that are inserted directly without pre-compression. They provide a consistent, repeatable seal that does not degrade with insertion technique variation, and they can be washed and reused for weeks to months. The tradeoff is a lower NRR (27 vs. 33) — which matters in extreme-noise environments but is adequate for most industrial applications up to 100 dB(A).

How long do Moldex Alphas earplugs last?

With proper care (washing after each use, dry storage in a case), most users get several months of daily use from a single pair. Replace when flanges show cracks or deformation, when a consistent seal can no longer be achieved, or if the stem is cracked or broken. Do not use earplugs that have been visibly contaminated and cannot be cleaned.

Can I use Alphas earplugs in environments above 100 dB(A)?

Single protector NRR 27 is not sufficient above 100 dB(A) (OSHA 50% derating). For higher-noise environments, either: (1) add earmuffs over the earplugs for dual protection (adds ~5–10 dB effective attenuation), or (2) switch to a disposable foam earplug with NRR 33 (effective 13 dB(A), covering up to ~103 dB(A) single protector). See the Moldex SparkPlugs NRR 33 or Pura-Fit NRR 33 listings for higher single-protector options.

Are these earplugs appropriate for workers with smaller or larger ear canals?

Moldex Alphas earplugs are designed for average adult ear canals. Workers with very small canals may find flanged earplugs uncomfortable; for these individuals, a small-size disposable foam (Moldex Meteors Small NRR 28) may fit better. Workers with larger canals typically find flanged designs seat well. If comfort or seal issues persist after proper training, try a different earplug family — Moldex offers free sample programs through authorized distributors.

Do I need to carry a case with reusable earplugs?

A case is strongly recommended even when not included. Store reusable earplugs in a clean, dry container between shifts — loose storage in pockets collects debris that contaminates the flanges and degrades the acoustic seal. Cases are available separately.

When are reusable earplugs not the right choice?

Reusable earplugs are not appropriate in these situations: environments with chemical vapors that could degrade TPE; workers with a history of ear infections or auditory canal conditions (consult occupational health); facilities requiring metal-detectable PPE near product lines (reusable TPE may not meet HACCP metal-detection requirements); or programs where worker turnover is high and individual earplug assignment is impractical. In these cases, disposable foam earplugs or metal-detectable disposable formats are the correct choice.