Moldex SparkPlugs Uncorded Earplugs – NRR 33 dB Hearing Protection (200 Pairs)
Moldex SparkPlugs 6604 uncorded foam earplugs provide disposable hearing protection for industrial noise environments. Each box contains 200 pairs, or 400 individual earplugs, for stocking safety cabinets and issuing protection to workers. Their colored streaks and swirls distinguish the SparkPlugs design, while soft, low-pressure foam and a tapered shape support comfortable fitting.
These roll-down earplugs carry an NRR of 33 dB, with attenuation tested according to ANSI S3.19-1974. The laboratory rating supports product comparison; actual protection depends on correct insertion, individual fit and consistent wear during exposure.
Moldex SparkPlugs 6604
MOL6604
200 pairs / 400 earplugs
Uncorded disposable foam / NRR 33 dB
Key Features
- Soft, tapered foam with a smooth surface.
- Uncorded design without a connecting neck cord.
- PVC-free construction; made in the USA.
- Disposable format for routine workplace replenishment.
Common Uses & Applications
- Manufacturing, metal fabrication and equipment maintenance.
- Construction, woodworking and grounds maintenance.
- Warehouse and packaging operations with assessed noise hazards.
Fit & Workplace Selection
Choose hearing protection using measured noise exposure, communication needs and compatibility with other PPE. Bright colors can help identify the product, but appearance alone cannot confirm a protective seal. Food facilities requiring detectable PPE should select a documented metal-detectable model; standard 6604 earplugs are not that version.
With clean hands, roll and compress the tapered end into a narrow, wrinkle-free cylinder. Reach over your head, gently pull the ear upward and outward, insert the compressed plug and hold it for 30–60 seconds as it expands. Follow Moldex’s complete foam earplug fitting instructions. Replace soiled or damaged plugs and store unused stock clean and dry.
Hearing Conservation & Applicable Standards
OSHA 29 CFR 1910.95 requires a hearing conservation program in general industry at exposures of 85 dBA or greater over an eight-hour time-weighted average. Employers must evaluate attenuation, provide suitable protectors and ensure proper fitting and training. OSHA does not certify this earplug as safe for every noise level.
NIOSH hearing protection guidance emphasizes adequate protection and individual fit testing. Do not simply subtract 33 dB from measured workplace noise or treat the rating as a guaranteed personal reduction.
Buying & Replenishment
For purchasing teams, record model 6604 and the 200-pair box quantity on recurring orders. Estimate usage from the number of workers, shifts and replacement needs rather than assuming one box covers a fixed number of workdays. Keep earplugs available before employees enter noisy areas, and include fitting instruction when issuing protection to new workers or visitors.
Manufacturer Documentation
Moldex SparkPlugs manufacturer datasheet (PDF) includes model 6604, box quantity, attenuation results and warnings.
FAQ
Does this box contain 200 plugs or 200 pairs?
It contains 200 pairs: 400 individual earplugs. Use pairs when comparing unit costs and planning replenishment.
Are these push-in earplugs?
No. SparkPlugs 6604 require rolling and compression before insertion. Workers needing a different fitting method should compare suitable push-in or premolded alternatives.
