6604 / 6654 | Moldex Spark Plugs Disposable Foam Ear Plugs | NRR 33 | Corded and Uncorded

Moldex 6604 and 6654 Spark Plugs® disposable foam ear plugs provide high-performance hearing protection in loud work environments where comfort, fit, and visibility are important. Constructed from soft, low-pressure polyurethane foam, these ear plugs expand gently in the ear canal to create a secure acoustic seal that helps reduce hazardous noise exposure throughout the workday.

Spark Plugs® feature a bright, multi-color design that makes compliance checks quick and easy on busy jobsites. Both models deliver a Noise Reduction Rating (NRR) of 33 dB and are designed to meet applicable ANSI testing standards, making them suitable for construction, manufacturing, industrial operations, landscaping, and general jobsite use.

Key Features

• Noise Reduction Rating (NRR): 33 dB
• Moldex 6604: Uncorded disposable ear plugs
• – 200 pairs per box
• Moldex 6654: Corded disposable ear plugs
• – 100 pairs per box
• Soft, low-pressure polyurethane foam for extended comfort
• Tapered shape for easy insertion and reliable fit
• Bright, high-visibility colors for easy compliance monitoring
• Disposable design supports hygiene and high-turnover environments
• Ideal for occupational hearing conservation programs

In-Stock and Ready to Ship