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Bulk bag of 100 pairs of corded foam earplugs in assorted bright colours with purple cords

Moldex

Moldex 507-6654 SparkPlugs Corded Earplugs 33NRR 100 Pairs

SKU CH-0NN4-4E7SW MPN 507-6654

Disposable foam earplugs with 33 dB noise reduction, corded for convenience, supplied as 100 wrapped pairs

  • Product typeAdd-On Shelves
  • Key featuresEye-catching random color patt
  • 33 dB noise reduction rating protects hearing in loud environments
  • 100 individually wrapped pairs supply a full team for extended use
  • Corded design keeps plugs together and prevents loss during breaks
  • PVC-free foam delivers a comfortable pressure-free fit for all-day wear
  • ANSI S3.19-1974 tested attenuation confirms reliable performance

SparkPlugs Corded Earplugs 33NRR

The Moldex 507-6654 SparkPlugs are single-use foam earplugs supplied in a bulk bag of 100 wrapped pairs. A PVC-free bullet-shaped plug rolls down for insertion and expands to give a pressure-free fit. Each pair is joined by a purple plastic cord to prevent loss during work shifts. The multicolour random patterns make compliance checks quick for supervisors.

Sustained comfort and attenuation

The soft foam maintains its seal over long periods without creating pressure points inside the ear canal. Because the plugs are disposable, hygiene stays consistent across a full day or a multi-day project without the degradation that affects reusable alternatives. The cord remains flexible and does not stiffen with sweat or temperature changes. Attenuation stays at the rated 33 dB as long as the plug is seated correctly.

Noise Reduction Rating 33 dB

The ANSI S 3.19-1974 tested rating of 33 dB is the single figure that determines whether this plug meets a specific hearing-conservation requirement. Environments with higher impulse noise or mandatory dual-protection rules will need a higher-rated device. Buyers who require metal-detectable plugs for food-processing lines cannot use this model. Electrically insulated variants are also not provided by this product.

How it compares

Measured against everything we stock in Stockroom Supplies & Equipment, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 62% of the 352 comparable items (median $73.49).

Specifications

Product
Brand nameMoldex
Model name507-6654
Product typeAdd-On Shelves
Size & build
Shipping weight0.68 kg
Package size178 × 127 × 76 mm

Questions about this item

How loud can a workplace be before the 33 NRR SparkPlugs stop being effective?

The 33 NRR rating indicates high attenuation; they are designed for very noisy environments but actual protection depends on proper roll-down insertion and fit.

Do I need a dispenser or any accessory to use these 100 pairs of corded earplugs?

No dispenser is required; each pair is individually wrapped in a plastic bag inside the bulk box, ready for immediate roll-down insertion.

Can the purple plastic cord on these SparkPlugs be used with a hard-hat attachment or lanyard system?

The cord is made of purple plastic and connects the two plugs; compatibility with specific hard-hat slots or lanyards is not detailed in the product specifications.

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